Grandstream Networks GXW4248 User Manual

Grandstream Networks, Inc.

Analog IP Gateway GXW4248

GXW42XX User Manual www.grandstream.com

Firmware Version 1.0.0.49 [e-mail]

GXW4248 USER MANUAL

INDEX

GNU GPL INFORMATION .......................................................................... 5

CHANGE LOG ........................................................................................... 6

WELCOME ................................................................................................. 7

GATEWAY GXW4248 OVERVIEW ........................................................................................................ 7

SAFETY COMPLIANCE ........................................................................................................................ 7

WARRANTY ........................................................................................................................................... 7

CONNECT YOUR GXW4248 GATEWAY ................................................... 9

EQUIPMENT PACKAGING ................................................................................................................... 9

CONNECT THE GXW4248 ................................................................................................................... 9

GXW4248 FEATURES ............................................................................. 13

SOFTWARE FEATURES OVERVIEW ................................................................................................ 13

HARDWARE SPECIFICATION ............................................................................................................ 14

GXW4248 LCD MENU......................................................................................................................... 15

FIGURE 3: LCD MENUBASIC OPERATIONS ......................................... 16

BASIC OPERATIONS .............................................................................. 17

UNDERSTANDING GXW VOICE PROMPTS ..................................................................................... 17

PLACING A PHONE CALL .................................................................................................................. 18

PHONE OR EXTENSION NUMBERS .......................................................................................... 18

DIRECT IP CALLS ........................................................................................................................ 19

CALL HOLD ......................................................................................................................................... 20

CALL WAITING .................................................................................................................................... 20

CALL TRANSFER ................................................................................................................................ 20

BLIND TRANSFER ....................................................................................................................... 20

A TTENDED TRANSFER .............................................................................................................. 21

3-WAY CONFERENCING .................................................................................................................... 21

HUNTING GROUP .............................................................................................................................. 21

INTER-PORT CALLING ....................................................................................................................... 23

SENDING AND RECEIVING FAX ....................................................................................................... 24

SUPPORT RADIUS PROTOCOL ........................................................................................................ 24

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 2 OF 56

CALL FEATURE S .................................................................................... 25

CONFIGURATION GUIDE ........................................................................ 27

CONFIGURING GXW4248 VIA VOICE PROMPT .............................................................................. 27

CONFIGURING GXW4248 WITH WEB BROWSER .......................................................................... 27

ACCESS THE WEB CONFIGURATION MENU ........................................................................... 28

IMPORTANT SETTINGS ..................................................................................................................... 28

NAT SETTINGS ............................................................................................................................ 28

DTMF METHODS ......................................................................................................................... 29

PREFERRED VOCODER (CODEC) ............................................................................................ 29

SA VING THE CONFIGURATION CHANGES...................................................................................... 49

REBOOTING FROM REMOTE ........................................................................................................... 49

CONFIGURA TION THROUGH A CENTRAL SERVER ....................................................................... 50

SOFTWARE UPGRADE ........................................................................... 51

FIRMWARE UPGRADE THROUGH TFTP/ H TTP / HT TP S .................................................................. 51

INSTRUCTIONS FOR LOCAL FIRMWARE UPGRADE: .................................................................... 52

CONFIGURATION FILE DOWNLOAD ................................................................................................ 52

FIRMWARE AND CONFIGURATION FILE PREFIX AND POSTFIX .................................................. 53

MANAGING FIRMWARE AND CONFIGURATION FILE DOWNLOAD .............................................. 53

RESTORE FACTORY DEFAULT SETTI NG ............................................. 54

FACTORY RESET ............................................................................................................................... 54

RESET BUTTON .......................................................................................................................... 54

IVR COMMAND ............................................................................................................................ 54

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 3 OF 56

TABLE OF FIGURES

GXW4248 User Manual

Figure 1: Diagram of GXW4248 Panel ....................................................................................................... 10

Figure 2: 50 Pin Telco Connector ................................................................................................................ 11

Figure 3: LCD Menu .................................................................................................................................... 16

T

ABLE OF TABLES

GXW4248 User Manual

Table 1: Definitions of the GXW Connectors .............................................................................................. 10

Table 2: Definitions of the GXW Display Panel .......................................................................................... 10

Table 3: GXW4248 Software Features ...................................................................................................... 13

Table 4: Hardware Specification of GXW4248 gateway ............................................................................ 14

Table 5: Definitions of the GXW Voice Prompts ......................................................................................... 17

Table 6: Call Features Table (Star Code) ................................................................................................... 25

Table 7: Status ............................................................................................................................................ 30

Table 8: Maintenance ................................................................................................................................. 31

Table 9: Advanced settings ........................................................................................................................ 36

Table 10: Profiles ........................................................................................................................................ 37

Table 11: FXS Ports.................................................................................................................................... 49

ONFIGURATION GUI INTERFACE EXAMPLES

C

GXW4248 User Manual

http://www.grandstream.com/products/gxw_series/GXW42xx/documents/GXW42xx_gui.zip

CREENSHOT OF ADVANCED SETTINGS CONFIGURATION PAGE

1. S

2. S

CREENSHOT OF BASIC SETTINGS CONFIGURATION PAGE

3. S

CREENSHOT OF FXS PORTS CONFIGURATION LOGIN PAGE

4. S

CREENSHOT OF PROFILE 1 CONFIGURATION PAGE

5. S

CREENSHOT OF PROFILE 2 CONFIGURATION PAGE

6. S

CREENSHOT OF STATUS PAGE

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 4 OF 56

GNU GPL INFORMATION

GXW4248 firmware contains third-part y software licensed un der the GNU Gen eral Public Lice nse (GPL).
Grandstream uses software under the specific terms of the GPL. Please see the GNU General Public
License (GPL) for the exact terms and conditions of the license.

Grandstream GNU GPL related source code can be downloaded from Grandstream web site from:

http://www.grandstream.com/support/faq/gnu_gpl .

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 5 OF 56

CHANGE LOG

This section documents significant changes from previous versions of GXW4248 user manuals. Only
major new features or major docum ent updates are listed here. Minor updates for cor rections or ed iting
are not documented here.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 6 OF 56

WELCOME

Thank you for purchasing t he Grands tream GXW4248 Analog FXS IP Gateway. The GXW4248 offers an
easy to manage, easy to configure IP communications solution for any business with virtual and/or branch
locations. The GXW4248 supports popular voice codecs and is designed for full SIP compatibility and
interoperability with third party SIP providers, thus enabling you to fully leverage the benefits of VoIP
technology, integrate a traditional phone system into a VoIP network, and efficiently manage
communication costs.

This manual will help you learn how to operate and manage your GXW FXS Analog IP Gateway and
make the best use of its many upgraded features including simple and quick installation, multi-party
conferencing, and direc t IP-IP Calling. This IP Analog G ateway is very easy to manage and scalable,
specifically designed t o be an easy to use and affordable VoIP solution for the small – medium bus iness
or enterprise.

GAT E WAY GXW4248 OVERVIEW

The new GXW4248 has a compact and quiet design and offers superb audio quality, rich feature
functionality, strong security protection, and good manageability. It is auto-configurable, remotely
manageable and scalable.

The GXW4248 features 48 port FXS interface for analog telephones, dual 10/100/1000Mbps network
ports, and RJ21 analog port. In addition, it supports the option of 4 SIP Server profiles, caller ID for
various countries/r egions, T.38 fax, flexible dialing plans, security protectio n (SIPS/TLS), com prehensive
voice codec including G.711 (a/u-law), G.723.1, G.726(16/24/32/40 bit rates), iLBC and G.729.

SAFETY COMPLIANCE

The GXW4248 is compliant with various safety standards including FCC/CE. Its power adapter is
compliant with UL standard. Warning: use only the power a dapter included in the GXW4248 package.

Use of alternative power adapter may permanently damage the unit.

WARRANTY

Grandstream has a reseller agreement with our reseller customers. End users should contact the
company from whom the product was purchased, for replacement, repair or refund.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 7 OF 56

If you purchased the product directly from Grandstream, contact your Grandstr eam Sales and Service
Representative for an RMA (Return Materials Author ization) number. Grandstream reserves the right to
change the warrant y polic y with out pr ior notif icat io n.

Caution: Changes or modificatio ns to t his product not ex press ly appr oved by Grands trea m, or operation

of this product in any way other than as detailed by this User Manual, could void your manufacturer
warranty.
Reproduction or transm ittal of the entire or any part, in any for m or by any means , electronic or print, for
any purpose without the express written permission of Grandstream Networks, Inc. is not permitted.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 8 OF 56

CONNECT YOUR GXW4248 GAT E WAY

Connecting the GXW4248 gateway is easy. Before you begin, please verify the contents of the
GXW4248 package.

EQUIPMENT PACKAGING

Unpack and check all accessories. Equipment includes:

• one device unit

• one RJ45 Ethernet cable

• one 24V 6.5A universal power adapter

• mount

CONNECT THE GXW4248

Follow these four (4) steps to connect your GXW4248 gateway to the Internet and access the unit’s
configuration pages.

1. Connect standard touch-tone anal og phones to the GXW4248’s RJ21 port with a RJ11 to R21
cable.

2. Insert an RJ45 Ethernet cable into the WAN port of GXW4248 and connect the other end to an
uplink port (a router or a modem, etc.)

3. Plug the power adapter into the GXW4248 gateway into a power outlet.

Follow the instructions from the topic “
The GUI pages will guide you through the remaining steps to set-up your gateway.

Configuring GXW 42XX wit h Web Brows er” for init ial config uration.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 9 OF 56

Ethernet port

RESET

Factory Reset button. Press and hold for a while to reset factory default settings.

DC IN

Power adapter connection

Analog port

Connect to analog phones / fax machines with an RJ21 to RJ11 cable

FXS ports

FXS port to be connected to analog phones / fax machines.

Act LED

Remains ON if plug the network cable.

LINK LED

Indicates Ethernet port act iv ity.

FXS LED

Indicate status of the respective FXS Ports on the back panel

FIGURE 1: DIAGRAM OF GXW4248 PANEL

TABLE 1: DEFINITIONS OF THE GXW CONNECTORS

Connect to the internal LAN network , router or PC

Note: O nce the GXW4248 is tur ned on and configured, th e front disp lay panel indicates the status of th e
unit.

TABLE 2: DEFINITIONS OF THE GXW DISPLAY PANEL

Busy - ON (Solid Green)
Available - OFF

Slow blinking FXS LEDs indicates Voice Mail for that port.
All FXS LEDs slow blinking indicates provisioning.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 10 OF 56

Pin

Signal

Pin

Signal

1

RING1

26

TIP1

2

RING2

27

TIP2

3

RING3

28

TIP3

4

RING4

29

TIP4

5

RING5

30

TIP5

6

RING6

31

TIP6

7

RING7

32

TIP7

8

RING8

33

TIP8

9

RING9

34

TIP9

10

RING10

35

TIP10

11

RING11

36

TIP11

12

RING12

37

TIP12

13

RING13

38

TIP13

14

RING14

39

TIP14

15

RING15

40

TIP15

16

RING16

41

TIP16

17

RING17

42

TIP17

18

RING18

43

TIP18

19

RING19

44

TIP19

20

RING20

45

TIP20

21

RING21

46

TIP21

22

RING22

47

TIP22

23

RING23

48

TIP23

24

RING24

49

TIP24

FIGURE 2: 50 PIN TELCO CONNECTOR

NOTE:

 The last pair of pin 25 and 50 on each RJ21 is not connected.
 All LED lights display green when ON.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 11 OF 56

 LINK LED and ACT LED blinking in following status indicate different network speed.

10M: LINK and ACT all blink, ACT blinks faster then LINK
100M: LINK and ACT all blink, ACT blinks the same fast as LINK
1000M: LINK does not blink, only ACT blink

 Slow blinking of FXS LED together indicates a firmware upgrade or provisioning state.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 12 OF 56

GXW4248 FEATURES

GXW4248

Telephone Interfaces

SIP Provisioning

Network Interface

NG (comfort noise generation) and PLC (packet

loss concealment), LEC with NLP Packetized Voice Protocol Unit (supports

The GXW4248 is a next generation IP voice gatewa y that is i ntero per ab le and compatible with leading IP­PBXs, Soft switches and SIP platforms. The GXW4248 FXS gateway is auto-configurable, remotely
manageable and sca lable. The GXW4248 offers superb v oice quality, traditional telephony funct ionality,
easy deployment, and 48 FXS ports. Each model feat ures flexible d ialing plans , integrated call routing to
support a pure IP network call and an external power supply.

SOFTWARE FEATURES OVERVIEW

• 48 FXS ports

• RJ-45 Ethernet ports

• 4 configurable SIP profiles

• Supports Voice Codecs:

G711(a/µ, Annex I & II), G723.1A, G726 (AD PCM with 16/24/32/40 bit rates), G729 A/B, iLBC,
T.38 Fax

• Comprehensive Dial Plan support for Outgoing calls.

• G.168 Echo Cancellation

• Voice Activation Detection (VAD), Comfort Noise Generation (CNG), and Packet Loss

Concealment (PLC)

• Supports PSTN/PBX analog telephone sets or analog trunks

TABLE 3: GXW4248 SOFTWARE FEATURES

48 FXS ports
48 SIP accounts, 4 profiles
10/100/1000 Mbps, RJ-45

Number of Concurrent
Calls (except when using
SRTP)

48 Concurrent Calls

Voice over Packet
Capabilities

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 13 OF 56

Voice Activity Detection (VAD) with C

RTP/RTCP and AAL2 protocol), G.168 compliant Echo Cancellation, Dynamic Jit ter

Voice Compression

G.711 + Annex I (PLC), Annex II (VAD/CNG format) encoder and decoder, G.722

provides proprietary VAD, CNG, and signal power estimation, Voice Play Out unit

, fixed and adaptive jitter buffer, clock synchronization), AGC (automatic

switch to G.711 for Fax

Buffer, Modem detection & auto-switch to G.711

(pending), G.723.1A, G.726(ADPCM with 16/24/32/40 bit rates), G.729, iLBC, G.726

(reordering
gain control),

Status output, Decoder controlling via voice packet header

DHCP Server/Client
Fax over IP

QoS
Transport Protocol
DTMF Method
IP Signaling
Provisioning
Security
Management
Dial Plan
3-Way Conference
Caller ID
Polarity Reversal / Wink

DHCP Client only
T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-

Pass-through,
Fax Datapump V.17, V.21, V.27ter, V.29 for T.38 fax relay

DiffServ, TOS, 802.1P/Q VLAN tagging
RTP/RTCP
In-audio, RFC2833, and/or SIP Info
SIP (RFC 3261)
TFTP, HTTP, HTTPS
SRTP, IPSEC, TLS/SIPS, HTTPS, 802.1x
Syslog support, HTTP and Telnet access
Yes
3-Way conference with local mixing
Bellcore Type 1 & 2, ETSI, BT, NTT, FSK and DTMF-based CID
Yes

Network Connectivity

IPv4, IPv6, TCP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP,
NTP, TFTP, TELNET, PPPoE, STUN

HARDWARE SPECIFICATION

The hardware specifications of the GXW4248 are detailed in Table 4.

TABLE 4: HARDWARE SPECIFICATION OF GXW4248 GATEWAY

GXW4248

Telephone Interface
FXS LEDs

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 14 OF 56

2 RJ21 Ports only
48

Network interface

Power Input

Input

LAN, Single 10/100/1000 BASE-TX,RJ45

:100-240VAC, 50/60Hz

Output: 24V DC, 6.25A

LCD screen
Telco connector
RJ-11 connectors
NAND Flash
DRAM
Function Buttons
Environmental

Mounting
Onhook Voltage
Ring Voltage
Ring Frequency
Short Haul Loop
Outdoor Protection

128×32 pixel
2 RJ21 (50 pins)
No
64MB
128MB (+ separate 8MB if with a slave processor)
1 button for Reset/Factory Reset
Operation: 0°C to 45°C

Storage: -20°C to 60°C
Humidity: 10％ to 90% Non-condensing

Desktop and Rack mount
Fixed, 48V
50Vrms (balanced ringing)
20-50Hz
2REN: Up to 1km on 24 AWG wire
Over-voltage Protection and surge immunity

Signaling
EMC
Safety

Compliance

FXS Loop-start
EN55022/EN55024 and FCC part15 Class B

UL
FCC, CE, C-Tick

GXW4248 LCD MENU

The GXW4248 gateway inc ludes a sm all LC D sc reen f or th e dis pla y of bas ic inf or m ation. The L CD has a
display area of 128x32 pixels, which will allow for 2 lines of text with a 16px height limitation per line.
The LCD menu is showed as Figure 3: LCD Menu. Menu is navigated by the Down-arrow and OK button.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 15 OF 56

FIGURE 3: LCD MENU

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 16 OF 56

BASIC OPERATIONS

Menu

Voice Prompt

User’s Options

Main Menu

“Enter a Menu Option”

Enter “*” for the next menu option

001

“DHCP Mode”, “PPPoE

Enter ‘9’ to toggle the selection

If user selects “Static IP Mode”, user need configure all the IP

05. If user selects

“Dynamic IP Mode”, the device will retrieve all IP address

tically when user reboots

002

“IP Address “ + IP address

The current WAN IP address is announced

003

“Subnet “ + IP address

Same as Menu option 002

004

“Gateway “ + IP address

Same as Menu option 002

005

“DNS Server “ + IP address

Same as Menu option 002

007

Preferred Vocoder

Enter “9” to go to the next selection in the list:

010

“MAC Address”

Announces the Mac address of the unit.

013

Firmware Server IP

Announces current Firmware Server IP address. Enter 12 digit

014

Configuration Server IP

Announces current Config Server Path IP address. Enter 12 digit

015

Upgrade Protocol

Upgrade protocol for firmware and configuration update. Enter

UNDERSTANDING GXW VOICE PROMPTS

GXW4248 has a built-in voice prom pt menu for simple device configuration. To enter the voice prompt
menu, press *** on the standard analog phone connected to any FXS port.

TABLE 5: DEFINITIONS OF THE GXW VOICE PROMPTS

Enter “#” to return to the main menu
Enter “001 – 005, 007, 010, 013 - 017, 047, 086 or 099” Menu
option
Enter “9” for confirming a option

Mode ”or “Static IP Mode”

address information through menu 002 to 0

Address

information from DHCP server automa
the device.

Enter 12-digit new IP address if in Static IP Mode.

• PCM U

• PCM A

• iLBC

• G-726

• G-723

• G-729

new IP address.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 17 OF 56

Address

new IP address.

“9” to toggle between TFTP and HTTP

016

Firmware Version

Firmware version information.

017

Firmware Upgrade

Firmware upgrade mode. Enter “9” to rotate among the following

047

“Direct IP Calling”

Enter the target IP address to make a direct IP call, after dial

086

Voice Mail

Number of voice mails

099

“RESET”

Enter “9” to reboot the device; or

700-748

Phone calls between
different ports of the same

GW4248

GXW4248 support inter-port calling from voice menu for easy

“Invalid Entry”

Automatically returns to Main Menu

three options:

1. always check

2. check when pre/suffix changes

3. never upgrade

tone. (See “Make a Direct IP Call”.)

Enter MAC address to restore factory default setting
(See Restore Factory Default Setting section)

test/verification in factory
“700” Ring all ports and connect to first port pick up the call
“701-748” Call individual port

Five Success Tips when using the Voice Prompt

1. “*” shifts down to the next menu option

2. “#” returns to the main menu

3. “9” functions as the ENTER key in many cases to confirm an option

4. All entered digit seque nces have known lengths - 2 digits for menu option and 12 digits for IP
address. For IP address , add 0 before the d igits if the digits are less than 3 (i.e. - 192.168.0.26
should be key in like 192168000026. No decimal is needed).

5. Key entry cannot be deleted but the phone may prompt error once it is detected

PLACING A PHONE CALL

PHONE OR EXTENSION NUMBERS

1. Dial the number dir ectly and wait for 4 sec onds ( To change the default value, modify the followin g
setting - “No Key Entry Timeout”)

or

2. Dial the number directly and press # (Use # as dial key” must be configured in web configuration).

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 18 OF 56

Examples:

1. Dial a number (e.g. [phone]), first enter the prefix number (usually 1+ or international
code) followed by the phone number. Press # or wait for 4 seconds. Check with your VoIP
service provider for further details on prefix numbers.

DIRECT IP CALLS

Direct IP calling all ows t wo parties, that is, a FXS Port with an a nalog phon e and another VoIP Device, to
talk to each other in an ad hoc fashion without a SIP proxy.

Elements necessary to completing a Direct IP Call:

1. Both GXW4248 and other VoIP Device, have public IP addresses, or

2. Both GXW4248 and other VoIP Device are on the same LAN using private IP addresses, or

3. Both GXW4248 and other VoIP Device can be connec ted through a rout er using public or priv ate
IP addresses (with necessary port forwarding or DMZ).

GXW4248 supports two ways to make Direct IP Calling:

Using IVR

1. Pick up the analog phone then access the voice menu prompt by dial “***”

2. Dial “047” to access the direct IP call menu

3. Enter the IP address using format ex. 192*168*0*160 after the dial tone.

Using Star Code

1. Pick up the analog phone then dial “*47”

2. Enter the target IP address using same format as above.

Note: NO dial tone will be played between step 1 and 2.

Destination ports can be specified by using “*” (encoding for “:”) followed by the port number.

Examples:

a) If the target IP address is 192.168.0.160, the dialing convention is

*47 or Voice Pr o mpt with option 047, then 192*168*0*160.

followed by pressing the “#” ke y if it is configured as a send key or wait 4 second s. In this case,
the default destination port 5060 is used if no port is specified.

b) If the target IP address/port is 192.168.1.20:5062, then the dialing convention would be:

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 19 OF 56

*47 or Voice Prompt with option 047, then 192*168*0*160*5062 followed b y pressing the “#”
key if it is configured as a send key or wait for 4 seconds.

CALL HOLD

Place a call on hold b y pressing the “flash” button on the analog p hone (if the phone has that button).
Press the “flash” butto n again to release the pr e vious l y h eld C a ller an d r esume conversation. If no “ f lash”
button is available, use “hook flash” (toggle on-off hook quickly). You may drop a call using hook flash.

CALL WAITING

Call waiting tone (2 short b eeps) indicates an incom ing call, if the call waiting f eature is enabled. Toggle
between incoming ca ll and curr ent call by pres sing the “f lash” button. First call is placed on hold. Press
the “flash” button to toggle between two active calls.

CALL TRANSFER

BLIND TRANSFER

Assume that call Caller A and B are in conversation. A wants to Blind Transfer B to C:

3. Caller A presses FLASH on the analog phone to hear the dial tone.

4. Caller A dials *87 then dials caller C’s number, and then # (or wait for 4 seconds).

5. Caller A will hear the confirm tone. Then, A can hang up.

NOTE: “Enable Call Feature” must be set to “Yes” in web configuration page.
Caller A can place a call on hold and wait for one of three situations:

1. A quick confirmation tone (similar to c all waiting tone) followed by a dial tone. This indicates th e
transfer is successful (transferee has received a 200 OK from transfer target). At this point, Caller
A can either hang up or make another call.

2. A quick busy tone followed by a restored call (on supported platforms only). This means the
transferee has receive d a 4xx response for the INVIT E and we will try to recover the call. The
busy tone is just to indicate to the transferor that the transfer has failed.

3. Continuous busy ton e. The phone has t imed out. Note: cont inuous busy tone does not ind icate
the transfer has b een suc c es sf ul, nor does it indic at e t he tr a ns f er has f ail ed. It often means there
was a failure to receive second NOTIFY – check firmware for most recent release.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 20 OF 56

ATTENDED TRANSFER

Assume that Caller A and B are in conversation. Caller A wants to Attend Transfer B to C:

1. Caller A presses FLASH on the analog phone for dial tone.

2. Caller A then dials Caller C’s number followed by # (or wait for 4 seconds).

3. If Caller C answers the call, Caller A and Caller C are in convers ation. Then A can hang up to
complete transfer.

4. If Caller C does not answer the call, Caller A can press “flash” to resume call with Caller B.

NOTE: W hen Attended Transfer fails and A hangs up, the GXW4248 will ri ng back user A to remind A
that B is still on the call. A can pick up the phone to resume conversation with B.

3-WAY CONFERENCING

The GXW4248 supports Bellcore style 3-way Conference.

Instructions for 3-way conference:

Assuming that call party A and B are in conversation. A (GXW4248) wants to bring C in a conference:

1. A presses FLASH (on the analog phone, or Hook Flash for old model phones) to get a dial tone.

2. A dials C’s number then # (or wait for 4 seconds).

3. If C answers the call, then A presses FLASH to bring B, C in the conference.

4. If C does not answer the call, A can press FLASH back to talk to B.

5. If A presses FLASH during conference, C will be dropped out.

6. If A hangs up, the conferenc e will be terminated or transf er B to C if “Transfer on Conference
Hangup” set to yes

HUNTING GROUP

This feature allows the use r to setup a single SI P account on the gatewa y and have t he ability to use all
FXS ports to make/receive calls . Using this feature, all ports active in same Hunting Group will have the
same phone number and in c om ing cal ls will be d is trib u ted in a Linear or Circ ular manner among the ports
active in that Hunting G roup. The num ber of hunting groups is lim ited b y the num ber of ports each GXW
model has - i.e. each port can be i ts own Hunting Group. T he most practical and efficient way to use
Hunting Groups is to assign 2 or 3 ports to separate Hunting Groups.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 21 OF 56

One additional and popular way to use the Hunting Group f eature is called “mu ltiplexed analog l ines”. In
this configuration, a legacy PBX system with 8 FXO trunks can be connected to 8 GXW 42xx ports
configured as a Hunting Group. The GXW can be registered to a SIP server provider using only one
phone number. If the SIP service pr ovider allo ws multiple ca lls to the sam e number, the GXW will allo w 8
concurrent calls to the s ame SIP number. All office members can be reache d remotely using the same
phone number in a round-robin fashion.

Example Configuration of a typical Hunting Group:

1. Configure the SIP account from your VoIP Service Provider on FXS port 1 under FXS Ports
webpage.

2. Select Active under the Hunting Group drop box for FXS port 1.

3. For the remaining ports (sa y 2, 3 and 4) select 1 for Hunting Group. Ports 2, 3 and 4 are now
active members of the hunting group associated with port 1.

This configurati on will route all calls directed to FXS port 1 to ports 2, 3 and/or 4 in round robin fas hion
respectively if

port 1 is busy or times out. You can configure the ring timeout on the Profile page.

Example configuration of a multiple Hunting Group:

FXS Port #1: SIP UserID and Authenticate ID entered, Hunting group set to "Active"
FXS Port #2: SIP UserID and Authenticate ID left blank, Hunting Group set to "1"
FXS Port #3: SIP UserID and Authenticate ID left blank, Hunting Group set to "1"
FXS Port #4: SIP UserID and Authenticate ID entered, Hunting group set to "Active"
FXS Port #5: SIP UserID and Authenticate ID left blank, Hunting Group set to "4"
FXS Port #6: SIP UserID and Authenticate ID left blank, Hunting Group set to "4"
FXS Port #7: SIP UserID and Authenticate ID entered, Hunting group set to "Active"
FXS Port #8: SIP UserID and Authenticate ID left blank, Hunting Group set to "7"
…

Hunting Group 1 contains ports 1, 2, 3. Hunting Group 4 contains ports 4, 5, 6.
Hunting Group 7 contains ports 7, 8.

Please be aware, the c hoic e of 1 f or por ts 2 an d 3, the c hoice of 4 f or ports 5 a nd 6, th e choic e 7 for port

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 22 OF 56

8 is required to indicate that the SIP account tied to port marked as “Active” will be used for all members
of the same Hunting group. Needless to say, those members of the same Hunting group may not be
sequential ports. In follo wing example ports 3, 5 and 7 tied to SIP Accou nt configured in Por t #1 marked
as “Active”, and ports 4,6,8 tied to SIP Account configured in Port #2 marked as “Active” a s well.

Example of not sequential configuration of a multiple Hunting Group:

FXS Port #1: SIP UserID and Authenticate ID entered, Hunting group set to "Active"
FXS Port #2: SIP UserID and Authenticate ID entered, Hunting Group set to "Active"
FXS Port #3: SIP UserID and Authenticate ID left blank, Hunting Group set to "1"
FXS Port #4: SIP UserID and Authenticate ID left blank, Hunting group set to "2"
FXS Port #5: SIP UserID and Authenticate ID left blank, Hunting Group set to "1"
FXS Port #6: SIP UserID and Authenticate ID left blank, Hunting Group set to "2"
FXS Port #7: SIP UserID and Authenticate ID left blank, Hunting group set to "1"
FXS Port #8: SIP UserID and Authenticate ID left blank, Hunting Group set to "2"

…

FXS Port #24: SIP UserID and Authenticate ID left blank, Hunting Group set to "2"

Note: A single call directed to the SIP ac count will NOT result in a ll por ts ringing at the same tim e. They
will ring in the hunting group only. This feature is applicable to incoming calls only.

There are two types of huntin g groups, Linear and Circular. Linear style will sort the call to the low est­numbered available li ne, this is also called “serial hunting”. Circular style wil l distribute the calls "round­robin". If a call is assigned to lin e 1, the next ca ll goes to 2 and the next to 3. The s uccess ion throughou t
each of the lines continues even if one of the previous lin es becomes available. W hen the en d of th e h unt
group is reached, the hunting starts over at the first line. Lines are skipped if they are still busy on a
previous call. These two hunting styles can be configured from the Profile_x page.

INTER-PORT CALLING

In some cases a user ma y want to mak e phone calls between the phones c onnected t o multiple ports of
the same gateway when it is used as a standalone unit, without the use of a SIP server. This feature will
also be applicable when the gat eway is used with Hunting G roups and is registered to SI P server only
with one master num ber. In such cases users st ill will be able to make inter-por t calls by using the IVR
feature.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 23 OF 56

For example, on the GXW4248 inter-port calling is achieved by dialing *** and 7 plus two extra digits
corresponding to the port number. For example the user connected to port 1 can be reached by dialing ***
and 701; the user connected to port 24 can be reached by dialing *** 724.

SENDING AND RECEIVING FAX

GXW4248 supports fax in two modes: 1) T.38 (Fax over IP) and 2) Fax Pass through. T.38 is the
preferred method beca use it is more reliable and work s well in most network conditions. If the ser vice
provider supports T.38, please use this method by selecting T.38 as fax mode
provider does not support T.38, pass-through mode may be used. If you have problems with sending or
receiving Fax, toggle the Fax Tone Detection Mode setting.

(default). If the service

SUPPORT RADIUS PROTOCOL

GXW4248 supports RADIUS for authentication, authorization and billing purposes. Primary and
secondary RADIUS server configurations are available to provide redundancy to this feature. In case
Primary Radius serv er becomes unus able, RADIUS r equests will be autom atically sent to th e secondary
server. W hen at least one R ADUI S s er ver was configured, the device will allo w us er s t o m ake phone c alls
only after authorization f rom RADIUS ser ver has been r eceived. CDR (C all Detail Recor d) is also sent to
the RADIUS server for bil ling purposes. RAIDUS s erver can send requests to terminate c alls when run
out of pre-paid credit.

The GXW4248 will be able to work in VoIP billing environment using redundant double server
configuration. User will be able to configure primary and secondary RADUIS server IP Addresses or
FQDNs. Once at least one RADUIS server was configured, the device will allow users t o make phone
calls only after permission from RADIUS server has been received. In case Primary Radius server
becomes unusable, sec ondary will take role of pr imary and will m anage credit recourses in the network.
Imbedded RADIUS c lient also supports req uest generated b y Radius server t o terminate calls when run
out of pre-paid credit.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 24 OF 56

CALL FEATURES

*027110 (PCMU), *027111 (PCMA), *02723 (G723), *02729

*16

Enable SRTP

*47

Direct IP Calling. Dial “*47” + “IP address”. No dial tone will be played in the middle. Detail see

*50

Disable Call Waiting

Dial *69 and the phone will dial the last incoming phone number

2” and then the forwarding number followed by “#”. Wait

hen the destination phone number you want to activate in

GXW4248 supports the tr aditional telephon y features availab le in a PBX as wel l as additional advanced
telephony features.

TABLE 6: CALL FEATURES TABLE (STAR CODE)

Key Call Features

*02

*03 Disable LEC (pe call) Dial “*03” + ” number ”. No dial tone is played in the middle.

*17 Disable SRTP
*30 Block CallerID (for all-config change)
*31 Send CallerID (for all-config change)
*67 Block CallerID (per call)
*82 Send CallerID (per call)

*51 Enable Call Waiting (for all-config change)

*69

Forcing a Codec (per call)

(G729), *0272616 (G726-r16), *0272624 (G724-r24), *0272632 (G726-r32), *0272640 (G726­r40), *027201 (iLBC)

Direct IP Calling section on page 12.

(for all-config change)

Call Return Service:

received.
*70 Disable Call Waiting (Per Call)
*71 Enable Call Waiting (Per Call)

*72

*73 Cancel Unconditional Call Forward: Dial “*73” and wait for dial tone, then hang up.

*74

*78 Enable Do Not Disturb (DND): When enabled all incoming calls will be rejected.
*79 Disable Do Not Disturb (DND): When disabled, incoming calls will be accepted.

*87 Blind Transfer

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 25 OF 56

Unconditional Call Forward: Dial “*7

for dial tone and hang up. (dial tone indicates successful forward)

Enable Paging Call: Dial “*74” and t

Paging mode.

*90

Dial “*90” and then the forwarding number followed by “#”. Wait for dial

number followed by “#”. Wait for

If user hears call waiting beep, flash/hook will switch to the new incoming call. Also used to

*91 Cancel Busy Call Forward: dial “*91”. Wait for dial tone. Hang up.

Busy Call Forward:

tone then hang up.

*92

*93 Cancel Delayed Call Forward: Dial “*93” for a dial tone, then hang up.

Flash/Hook

#

Delayed Call Forward: Dial “*92” and then the forwarding

dial tone then hang up.

switch to a new channel for a new call.

Pressing pound sign will serve as Re-Dial key.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 26 OF 56

CONFIGURATION GUIDE

CONFIGURING GXW4248 VIA VOICE PROMPT

DHCP

MODE

Select voice menu option 001 to enable GXW4248 to use DHCP.

STATIC

IP MODE

Select voice menu opti on 001 to enable GXW4248 to use STATIC IP mode, then use opti on 002, 003,
004, 005 to set up IP address, Subnet Mask, Gateway and DNS server respectively.

PPP

OE MODE

Select voice menu option 001 to enable GXW4248 to use PPPoE mode.

F

IRMWARE SERVER IP ADDRESS

Select voice menu option 013 to configure the IP address of the firmware server.

C

ONFIGURATION SERVER IP ADDRESS

Select voice menu option 014 to configure the IP address of the configuration server.

U

PGRADE PROTOCOL

Select voice menu opti on 015 to choose firm ware and configuration upgrad e protocol. User can c hoose
between TFTP , HTTP, and HTTPS.

F

IRMWARE UPGRADE MODE

Select voice menu option 017 to choose firmware upgrade mode among the following three options:

1) always check, 2) check when pre/suffix changes, and 3) never upgrade

CONFIGURING GXW4248 WITH WEB BROWSER

The GXW4248 gateway has an embedded Web server that allows users to configure the GXW4248
through a web browser.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 27 OF 56

ACCESS THE WEB CONFIGURATION MENU

The GXW4248 HTML configuration menu can be accessed via Ethernet port:

To access the HTML configuration menu from the Ethernet port:

1. Follow table 4 to find the Ethernet port IP address.

2. Open a web browser, type in the IP address – for example:

http://GXW4248 -IP-Address (the

GXW4248 IP-Address is the Ethernet IP address for the GXW4248).

NOTE:

• The IVR announces 12 digits IP address, you need to strip out the leading “0” in the IP address. For ex.
IP address: 192.168.001.014, you need to type in http://192.168.1.14 in the web browser.

Once the HTTP request is entered and sent from a web browser, the user will see a log-in screen. There are
two default passwords for the login page:

User Level: Password: Web pages allowed:

End User Level 123 Only Status and Basic Settings
Administrator Level admin Browse all pages

The password is case sensitive with maximum length of 25 characters. The factory default password for End
User and administrator is “123” and “admin” respectively. Only an administrator can access the “ADVA NCED
SETTING”, “Prof ile 1~4”, and “FXS PORTs” conf iguration pages. Please reference the GUI pages using the
following link:

http://www.grandstream.com/products/ip-voice-telephony/enterprise-analog-gateways/GXW4248/GUI.zip.

IMPORTANT SETTINGS

The end-user must configure the following settings according to the local environment.
NOTE: Most settings on the web configuration pages are set to the def au lt value s.

NAT SETTINGS

If you plan to keep the gateway within a private netw ork behind a firewall, we recommend using STUN

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 28 OF 56

Server. The following three (3) settings are useful in the STUN Server scenario:

1. STUN Server (under Advanced Settings webpage)
Enter a STUN Server I P (or FQDN) that you ma y have, or look up a free public STUN Server o n the
internet and enter it on this field. If using Public IP, keep this field blank.

2. NAT Traversal (under the Profile web pages)
Set this to Yes when gateway is behind fir e wall on a private network.

DTMF METHODS

DTMF Settings are in Profile pages.

• DTMF in-audio

• DTMF via RTP (RFC2833)

• DTMF via SIP INFO

You can enable set priority of DTMF methods according to your preference, from Priority 1 to 3. This
setting should be based on your server DTMF setting.

PREFERRED VOCODER (CODEC)

The GXW4248 supports a broad range of voic e codec s. Under Profile web pages , choose your prefer red
order of different codecs:

• PCMU/A (or G711µ/a)

• G729

• G723

• G726 (16/24/32/40)

• iLBC

• AAL2 (all G726)

This section will desc ribe the options in the Web configurat ion user interface. As m entioned, a user can
log in as an administrator or end-user.

Functions available for the end-user are:

• STATUS: Displays the network status, acc ount status, software version and MAC -address of the

phone

• MAINTENANCE: Basic se ttings such as basic network, date and time s ettings, and web/telnet

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 29 OF 56

access settings can be set here.

System Info

Product Model

Contains the product model info.

Part Number

Product Part Number.

Software Version

Program: This is the main software release. This number is always used for firmware upgrade.

System Up Time

Shows system uptime since the last reboot.

System Time

The time according to NTP server.

Service Status

Shows the status of the VOIP applications.

Network Status

MAC Address

The device ID in hexadecimal format. This is needed for Internet Service Provider

IP Address Mode

Shows the current IP mode.

IP Address

Shows IP address of GXW4248.

Subnet Mask

Shows Subnet Mask of GXW4248.

Gateway

Shows Default Gateway of GXW4248.

DNS Server

Shows DNS Server of GXW4248.

• PROFILE - AUDIO SET TINGS: DTMF, Vocoder, and Analog Line settings can be configured here

for each port.

Additional functions available to administrators are:

• MAINTENANCE: Full settings for network, upgrade/provisioning, TR-069, Security and Syslog.

• ADVANCED SETTINGS: To set advanced Ring Tongs, FXO Failover, and System Features.

• PROFILE X: To configure each of the SIP accounts.

• FXS PORTS: To configure each of the FXS ports and Hunting Groups etc.

TABLE 7: STATUS

current version is 1.0.3.4.

Boot: current version is 1.0.3.2.
Core: current version 1.0.3.3.
Base: current version is 1.0.3.4.

troubleshooting. The MAC address will be used for provisioning and can be found on the label on
original box and on the label located on the bottom panel of the device.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 30 OF 56

NAT Traversal

Shows type of NAT the GXW4248 is connected to via its WAN port. It is based on STUN

protocol.

Port Status

Displays relevant information regarding the individual FXS ports. Example:

Network Settings

IP Address Mode

Choose how the IP address obtained on the phone.

Preferred DNS

Enter the preferred DNS server that should be used for DHCP and PPPoE.

DHCP Settings

Host name (Option 12)

Specifies the nam e of the clien t. This field is optional but may be

DHCP Domain

Specifies the DHCP Domain. This value is optional, but may be

Vendor Class ID (Option

Used by clients and servers to exchange vendor class ID.

Static IP Settings

Configure IP Addr ess, Subnet M ask, Gateway, DNS Server 1, and DNS Server 2.

QoS Settings

Layer 3 QoS

Defines the Layer 3 QoS parameter. This value is used for IP

Layer 2 QoS

Value used for layer 2 VLAN tag. Default setting is blank.

Layer 2 QoS 802.1p

Assigns the priority value of the Layer 2 QoS packets. Valid range is

STUN Settings

Use STUN

Yes or No. Default is No.

STUN server

The IP address or Domain name of the STUN server. Only non-

Port Hook SIP Registration DND Forward Busy Forward Delayed Forward
FXS1 On Hook Registered No 613
FXS2 Off Hook Registered No 614
FXS3 On Hook Not Registered No
FXS4 On Hook Registered Yes 615
FXS… … … …

TABLE 8: MAINTENANCE

Server

60)

802.1Q/VLAN Tag

Priority Value

required by Internet Service Providers.

required by Internet Service Providers.

Precedence, Diff-Serv or MPLS.

0 to 7.

symmetric NAT routers work with STUN.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 31 OF 56

Number of STUN

The Number of STUN response misses allowed before

Keep-Alive Interval

Specifies in seconds how often the phone sends a blank UDP packet
to the SIP server in order to keep the "ping hole" on the NAT router to

Upgrade and Provisioning

Lock Keypad

If set to “Yes”, the configuration update via keypad is disabled.

Firmware Upgrade

Specifies how firmware upgrading and provisioning request to be sent.

e options to choose from: “Always Check for New Firmware”, “Check New

Firmware only when F/W pre/suffix changes”, and “Always Skip the Firmware Check”.

XML Config File

The password used for encrypting the XML configuration file using OpenSSL.

HTTP/HTTPS User

HTTP/HTTPS

Upgrade via

Firmware

IP address or domain name of firmware server. That URL of the server that hosts the firmware

Config Server

IP address or domain name of configuration server. The server hosts a copy of the configuration

Firmware File

Default is blank. If configured, GXW4248 will request firmware file with the prefix. This setting is

Firmware File

Default is blank. This setting is useful for Internet Telephone Service Providers. End users should

Config File

Default is blank. This setting is useful for Internet Telephone Service Providers. End users should

Config File

Default is blank. This setting is useful for Internet Telephone Service Providers. End users should

Update

and Provisioning

Password

Name

Password

Response Misses
Allowed

There are thre

This is required for the phone to decrypt the encrypted XML configuration file.

The user name needed to authenticate withthe HTTP/HTTPS server.

The password needed to authenticate with the HTTP/HTTPS server.

restarting DHCP. The minimum is 3 misses.

open. The default is 20 seconds.

Server Path

Path

Prefix

Postfix

Prefix

Postfix

Allows users to choose the firmware upgrade method via TFTP, HTTP or HTTPS.

release. The default server is: fm.grandstream.com/gs

file to be installed on the gateway. The default server is: fm.grandstream.com/gs

useful for Internet Telephone Service Providers. End users should keep it blank.

keep it blank.

keep it blank.

keep it blank.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 32 OF 56

Allow DHCP

If set to “Yes”, configuration and upgrade server’s information can be obtained using DHCP

Automatic

Choose “Yes” to enable automatic upgrade and provisioning. When set to No, GXW4248 will

Authenticate

If set to Yes, configuration file is authenticated before being accepted. This protects the

Firmware Key

For firmware encryption. It should be 32-digit in Hexadecimal Representation. End user should

Web/T el net Access

Web Port

By default, HTTP uses port 80. This field is for customizable web port.

Disable Telnet

If set to Yes, telnet access will be disabled. Default is No.

User Password

Set new password for web GUI access as User. This field is case sensitive with a maximum

Admin Password

Set new password for web GUI access as Admin. This field is case sensitive with a maximum

TR-069

ACS URL

URL of the TR-069 Auto Configuration Servers (e.g., http://acs.my comp any.com, or IP address).

ACS Username

User specify the ACS Username

ACS Password

User specify the ACS password

Periodic Inform

Default is No. If set to YES, device will send inform packets to the ACS

Periodic Inform

Frequency that the inform packets will be sent out to the ACS

Connection

The user name for the TR-069 Auto Configuration Server to connect to the phone.

Option 43 and
Option 66 to
Override Server

Upgrade

Conf File

option 66 from DHCP server. This option specifies the URL of the tftp server.
Note: If DHCP Option 66 is enabled, the gateway will attempt downloading a configuration file
from the server URL provided by DHCP, even though Config Server Path is left blank.

only do upgrade once at boot up.
When “Check every day” or “Check every week” is checked, user can specify “Hour of the day (0-

23)” or “Day of the week (0-6)”. Default time is Monday 1AM.

configuration from unauthorized modifications.

keep it blank.

Enable

Interval

Request
Username

length of 30 characters.

length of 30 characters.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 33 OF 56

Connection

Request

The password for the TR-069 Auto Configuration Server to connect to the phone.

Security Settings

SIP TLS

The GXW4248 supports SIP over TLS. It has built-in private key and SSL

SIP TLS Private

You may also customize the SIP TLS Private Key. The user specified SIP TLS private key

SIP TLS Private

SSL Private key password used for SIP Transport in TLS/TCP.

Primary RADIUS

Remote Authentication Dial In User Service (RADIUS). GXW4248 supports RADIUS for
authentication, authorization and billing purposes. Primary and secondary RADIUS server
configurations are available to provide redundancy to this feature. In case Primary Radius

able, RADIUS requests will be automatically sent to the secondary
server. When at least one RADUIS server was configured, the device will allow users to make
phone calls only after authorization from RADIUS server has been received. CDR (Call Detail

) is also sent to the RADIUS server for billing purposes. RAIDUS server can send

Primary RADIUS

Default is 1812. Specifies the port to be used for the Primary RADIUS Authentication.

Primary RADIUS

Default is 1813. Specifies the port to be used for the Primary RADIUS Account.

Primary RADIUS

Specifies the secret string to be used to authenticate the RADIUS connection to the Primary

Secondary

Set the IP or FQDN of the Secondary RADIUS Server. In case Primary Radius server
becomes unusable, secondary will take role of primary and will manage credit recourses in the

Secondary

Default is 1812. Specifies the port to be used for the Secondary RADIUS Authentication.

Password

Certificate

Key

Key Password

Server

Authentication
Port

certificate. The user specified SSL certificate used for SIP over TLS is in X.509 format.

used for SIP over TLS is in X.509 format.

server becomes unus

Record
requests to terminate calls when run out of pre-paid credit.

Account Port

Server Secret

RADIUS Server

RADIUS
Authentication
Port

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 34 OF 56

Server . It should match RADIUS configuration.

network

Secondary

RADIUS Account

Default is 1813. Specifies the port to be used for the Secondary RADIUS Account.

Secondary

Specifies the secret string to be used to authenticate the RADIUS connection to the

RADIUS Timeout

Default is 2

RADIUS Retry

Default is 3

Download Device

Allows user to download and save a text file containing all the P values of each setting as
configured at that point on the unit. (Note: For Security Reasons, all Passwords won’t be

Date and Time

NTP Server

URI or IP address of the NTP (Network Time Protocol) server. Used by the phone to
synchronize the date and time. An extensive list of public NTP servers can be found at

NTP Update

Defines the update interval( in minutes ) to obtain the date and time from the server.

Time Zone

Configures the date/time used on the phone according to the specified time zone.

Self-Defined Time

This parameter allows the users to define their own time zone. For syntax and examples,

Syslog

Syslog Server

The IP address or URL of System log server. The server collects system log information from

Port

RADIUS Sever
Secret

Configuration

Interval

Secondary Server. It should match RADIUS configuration.

Downloaded)

http://www.ntp.org

Zone

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 35 OF 56

please refer to user manual.

the device.

Syslog Level

Select the GXW4248 to report the log level. Default is NONE. The level is one of DEBUG,

INFO, WARNING or ERROR . Sy slog mes sag es are sent ba s ed on the following events:

The Syslog uses USER facility. In addition to standard Syslog payload, it contains the

: May 19 02:40:38 192.168.1.14 GS_LOG: [00:0b:82:00:a1:be][000] Ethernet link is

Print SIP in

Enable o r disable printing of full SIP messages in Syslog.

Ring Tones

System Ring

Configuration option for all FXS ports ring cadence for all incoming calls.

1. product model/version on boot up (INFO level)

2. NAT related info (INFO level)

3. sent or received SIP message (DEBU G level)

4. SIP message summary (INFO level)

5. inbound and outbound calls (INFO level)

6. registration status change (I NFO level)

7. negotiated codec (INFO level)

8. Ethernet link up (INFO level)

9. SLIC chip exception (WARNING and ERROR levels)

10. memory exception (ERROR level)

following components:

GS_LOG: [device MAC address][error code] error message

Example

up

Syslog

Cadence

(Syntax: c=on1/off1-on2/off2-on3/off3; [...]) Default is set to c=2000/4000; (US standards)

TABLE 9: ADVANCED SETTINGS

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 36 OF 56

Call Progress

Tones

Using these settings, user can configure tone frequencies according to user preference. By
default, the tones are set to North American frequencies. Frequencies should be configured
with known values to avoid uncomfortable high pitch sounds. ONis the period of ringing (ON

ce. In order to set a continuous ring, OFF should be

FXO Failover

Failover to FXO

Enable or disable the Failover FXO Gateway.

FXO Gateway IP

IP Address or URI of the FXO gateway.

System Features

Disable Direct IP

Disables the Direct IP Call function. Default is “No”. If set to “Yes” direct IP-to-IP calling will

Disable SIP

Disables challenging SIP NOTIFY reboot and resync messages.

Disable Voice

Disables the voice prompt configuration. Default is “No”. If set to “Yes” accessing integrated
IVR Language

Choose English, Chinese, or Spanish.

General Settings

Profile Active

When set to Yes, the SIP Profile is activated.

SIP Server

SIP Server’s IP address or Domain name provided by VoIP service provider.

Gateway

time in ms) whi le OF F is th e per iod o f sil en
zero. Otherwise it will ring ON ms and a pause of OFF ms and then repeat the pattern.

• “Dial tone”

• “Ringback tone”

• “Busy tone”

• “Reorder tone”

• “Confirmation tone”

• “Call-Waiting tone”

Please refer the document below to determine your local call progress tones:

http://www.itu.int/ITU-T/inr/forms/files/tones-0203.pdf

Call

NOTIFY
Authentication

Prompt

not be supported.

voice menu will be impossible.

TABLE 10: PROFILES

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 37 OF 56

Failover SIP

Failover SIP Server’s IP address or Domain name provided by VoIP Service provider. This

Prefer Primary SIP

Default is No. If set to yes it will register to Primary Server if registration with Failover server

Outbound Proxy

IP address or Domain name of Outbound Proxy, or Media Gateway, or Session Border

for firewall or NAT penetration in different network environments.

ONLY outbound proxy can correct the

Network Settings

DNS Mode

Primary IP

Configures the primary IP address where the phone sends DNS query to when "Use

Backup IP 1

Configures the backup IP 1 address where the phone sends DNS query to when "Use

Backup IP 2

Configures the backup IP 2 address where the phone sends DNS query to when "Use

NAT Traversal

This parameter defines whether the GXW4248 NAT traversal mechanism is activated or not. If

performs according to the STUN client specification. Under this mode, the embedded STUN

the detect ed NAT is a Full

will use its mapped public IP

will

periodically (every 20 seconds) send a blank UDP packet (with no payload data) to the SIP

Use NAT IP

The NAT IP address used in SIP/SDP messages. It should ONLY be used if required by your

Server

Server

server will be used if the Primary SIP server becomes unavailable.

expires

Controller. Used by GXW4248
If symmetric NAT is detected, STUN will not work and
problem.

One from the 3 modes available for “DNS Mode” configuration:

-A Record (for resolving IP Address of target according to domain name)

-SRV (DNS SRV resource records indicates how to find services for various protocols)

-NAPTR/SRV (Naming Authority Pointer according to RFC 2915)

-Use Configured IP (If selected, please fill in Primary IP, Backup IP 1 and Backup IP 2.)
One mode can be chosen for the client to look up server.
The default value is “A Record”

Configured IP" is selected for DNS mode.

Configured IP" is selected for DNS mode.

Configured IP" is selected for DNS mode.

activated (by choosing “Yes”) and a STUN server is also specified, then the GXW4248

client will detect if and what type of firewall/NAT is being used. If
Cone, Restricted Cone, or a Port-Restricted Cone, the GXW4248
address and port in all of its SIP and SDP messages.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 38 OF 56

If the NAT Traversal field is set to “Yes” with no specified STUN server, the GXW4248

server to keep the “hole” on the NAT open.

ITSP.

Proxy-Require

A SIP Extension to notify the SIP server that the phone is behind a NAT/Firewall.

SIP Settings - Basic Settings

SIP transport

User can select UDP or TCP or TLS. Please make sure you’re SIP Server or network

SIP Registration

This parameter controls whether the GXW4248 needs to send REGISTER messages to the

Unregister on

Reboot

Default is No. If set to “Yes”, the SIP user’s registration information is cleared on reboot.

Outgoing Calls

Default is No. If set to “Yes,” user can place outgoing calls even when not registered (if

Any port, member of a Hunting Group that is not registered with a SIP account, will be able to

. Port 1 is registered

with a SIP account. Ports 3 and 5 are not registered. Ports 3 and 5 will be able to place

is

Register

Allows the user to specify the time frequency (in minutes) for the GXW4248 to refresh its
registration with the specified registrar. The default interval is 60 minutes (or 1 hour). The

SIP Registration

Allows the user to specify the time frequency (in seconds) for the GXW4248 to re-register after

seconds

Reregister Before

Determines how many seconds before the previous registration expires that the port should

Local SIP Port

Defines the local SIP port the GXW4248 will listen and transmit. The default value for Profile 1

Use Random SIP

Default is No. If set to Yes, the device will pick randomly-generated SIP ports. This is usually

SIP T1 Timeout

T1 is an estimate of the round-trip time between the client and server transactions.

SIP T2 Timeout

Maximum retransmission interval for non-INVITE requests and INVITE responses.

environment supports SIP over the selected trans port method. Default is UDP.

proxy server. The default setting is “Yes”.

Without
Registration

Expiration

Failure Retry Wait
Time

Expiration

allowed by Internet Telephone Service Provider) but is unable to receive incoming calls.

place outbound calls using the SIP credentials of the primary Hunting Group port.

For example: Port 1, 3 and 5 are members of the same Hunting Group

outbound calls using the SIP account of port 1, even if Outgoing Call without Registration
set to No

maximum interval is 65535 minutes (about 45 days).

registration failure. The default interval is 20 seconds. The maximum interval is 3600
(1 hour).

reregister.

is 5060 and 6060 for Profile 2.

Port

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 39 OF 56

necessary when multiple GXW4248/HT50X are behind the same NAT.

If the network latency is high, select larger value for more rel iabl e usage.

Remove OBP from

Route Header

Default is No. If set to Yes, the Outbound Proxy will be removed from the route header.

Support SIP

Default is Yes. If set to Yes, the contact header in REGISTER request will contain SIP Instance

Refer-To Use

Default is No. If set to YES, then for Attended Transfer, the “Refer-To” header uses the

SUBSCRIBE for

Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting Indication will be sent
Enable 100rel

Enables the use of PRACK (Provisional Acknowledgment) method.

TEL URI

request to indicate the E.164 number. If server supports TEL URI format, then this option needs

SIP Settings - Session Timer

Session

Grandstream implemented SIP Session Timer. The session timer extension enables SIP

the

INVITE message, the

session is considered timed out, if no

Min-SE

The minimum session expiration (in seconds). The default value is 90 seconds.

Caller Request

If selecting “Yes” the phone will use session timer when it makes outbound calls if remote party

Callee Request

If selecting “Yes” the phone will use session timer when it receives inbound calls with session

Force Timer

If selecting “Yes” the phone will use session timer even if the remote party does not support this
feature. Selecting “No” will allow the phone to enable session timer only when the remote party

for Caller Request Timer, Callee Request Timer, and

Instance ID

Target Contact

MWI

Expiration

ID as defined in IETF SIP Outbound draft.

transferred target’s Contact header information.

periodically.

The default setting is “Disabled”. If the phone has an assigned PSTN
Number, this field should be set to “User=Phone” then a
“User=Phone” parameter will be attached to the “From header” in the SIP

to be selected.

sessions to be periodically “refreshed” via a SIP request (UPDATE, or re-INVITE. When
session interval expires, if there is no refresh via a UPDATE or re­session will be terminated.

Session Expiration is the time (in seconds) at which the
successful session refresh transaction occurs beforehand. The default value is 180 seconds.

Timer

Timer

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 40 OF 56

supports session timer.

timer request.

support this feature.

To turn off Session Timer, select “No”
Force Timer.

UAC Specify

As a Caller, select UAC to use the phone as the refresher, or UAS to use the Callee or proxy

UAS Specify

As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to use the phone

Force INVITE

Session Timer can be refreshed using INVITE method or UPDATE method. Select “Yes ” to use

SIP Settings - Security Settings

Validate Incoming

Defines whether the incoming messages will be validated.

If set to "Yes", SIP User ID will be checked in the Request URI of the incoming INVITE. If it

Accept Incoming

If set to "Yes", SIP User ID will be checked in the Request URI of the incoming INVITE. If it

Authenticate

If set to "Yes", the phone will challenge the incoming INVITE for authentication with SIP 401

Fax Settings

Fax Mode

T.38 (Auto Detect) FoIP by default, or Pass-Through (must use codec PCMU/PCMA)

Fax Tone

Default is Callee. This decides whether Caller or Callee sends out the re-INVITE for T.38 or

Send Re-INVITE

Default is No, If set to “Yes”, device will send an INVITE with audio vocoders upon completition
Send Re-INVITE

If set to “Yes”, device will send an Re-INVITE after Fax tone is detected, disabling will only work

Enable Silence

For fax machines that do not send a Disconnect when fax is done. This option
Enables/Disables the detection of silence in order to know the fax has finished. The silence

Audio Settings

Refresher

Refresher

Messages

Check SIP User ID
for Incoming
INVITE

SIP from Proxy
Only

server as the refresher.

as the refresher.

INVITE method to refresh the session timer.

doesn't match the phone's SIP User ID, the call will be re jected. Direc t IP calling will als o be
disabled.

doesn't match the phone's SIP User ID, the call will b e rejected. Dire ct IP calling will a lso be
disabled.

Incoming INVITE

Detection Mode

After Fax
Completion

After Fax Tone

Detection for Fax
Disconnect

Unauthorized response.

Fax Pass Through.

of Fax to continue session in audio only.

under Broadsoft feature.

period is non-configurable and fixed to 7 seconds.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 41 OF 56

Preferred DTMF

The GXW4248 supports up to 3 different DTMF methods including in-audio, via RTP

Disable DTMF

Default is No. If set to yes, use above DTMF order without negotiation

DTMF Payload

Sets the payload type for DTMF using RFC2833.

Preferred Vocoder

The GXW4248 supports up to 5 different Vocoder types including G.711 A-/U-law, G.726

. The user can configure

Vocoders in a preference list that will be included with the same preference order in SDP

“Choice 1”. The

Voice Frames per

Number of the frame size when it transmits. Default is 2, from 1 -4 for G711/G726/G729
G723 Rate

Defines the encoding rate for G.723 vocoder. By default, 6.3kbps rate is chosen.

G726-32 Packing

Choose the packing mode for G726-32

iLBC Frame Size

Sets the iLBC frame size in 20ms or 30ms

iLBC Payload type

Default value is 97. Defines payload type for iLBC. The valid range is between 96 and 127.

AAL2-G726-16

Default value is 100. Range is from 96 to 127.

AAL2-G726-24

Default value is 99. Range is from 96 to 127.

AAL2-G726-32

Default value is 104. Range is from 96 to 127.

AAL2-G726-40

Default value is 103. Range is from 96 to 127.

Use First

Default is No. If set to “Yes”, device will include only the first match vocoder in its 200OK

method (in listed
order)

Negotiation

Type

TX

(RFC2833) and via Sip Info. The user can configure DTMF method in a priority list.

(Supports bit rates 16, 24, 32 and 40), G.723.1, G.729A/B, iLBC

message. The first Vocoder is entered by choosing the appropriate option in
last Vocoder is entered by choosing the appropriate option in “Choic e 8”.

Mode

Payload type

Payload type

Payload type

Payload type

Matching Vocoder
in 200OK SDP

response, otherwise it will include all match vocoders in same order received in INVITE.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 42 OF 56

SRTP Mode

Default is Disabled. Other options are Enabled but not forc ed, and Enabled and forced.

Silence

Default is No. VAD allows detecting the absence of audio and conserve bandwidth by

Jitter Buffer Type

Select either Fixed or Adaptive based on network conditions.

Jitter Buffer

Select Low, Medium or High based on network conditions.

High (initial 200ms, min 40ms, max 600ms) Note: not all vocoders can meet the high

SLIC Setting

Depends on standard phone type (and location)

Caller ID Scheme

Polarity Reversal

Default is No. If set to “Yes”, polarity will be reversed upon call establishment and termination.

Loop Current

Set to Yes if the traditional PBX you are using with GXW4248 uses this method for signaling

Loop Current

Default is 200. In 100 - 1 0000 milliseconds range.
Enable Hook

If no, flash will be treated as an on hook event.

Hook Flash timing

Sets the minimum/maximum time the phone is on hook before being detected as a hook flash.

On Hook Timing

Sets the time required to detect that the phone is on hook. The range is 40 to 2000

It uses SDP Security Description to exchange key. Please refer

SDES: http://www.apps.ietf.org/rfc/rfc4568.html

SRTP: http://www.apps.ietf.org/rfc/rfc3711.html

Suppression
(VAD)

Length

Disconnect

preventing the transmission of "silent packets" over the network.

•
requirement

• Medium (initial 100ms, min 20ms, max 200ms)

• Low (initial 50ms, min 10ms, max 100ms)

Select the value according to the local Telco standard where the GXW4248 is installed.
Please refer to the pull down list to select.

call termination. Default is No.

Disconnect
duration

Flash

(Minimum)/
(Maximum)

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 43 OF 56

The range is 40 to 2000 milliseconds

milliseconds. Default is 400 millisec ond s.

Gain

Handset volume adjustment. RX is for receiving volume (direction FXSto analog phone), TX

is for transmission volume (Analog phone to FXS). Default values are 0dB

for both

Disable Line Echo

Default is No. If set to “Yes”, device will not use LEC to remove echo from a voice
SLIC Setting

Depends on standard phone type (and location)

Caller ID Scheme

Call Settings

Early Dial

Default is No. Use only if proxy supports 484 response. This parameter controls whether the
phone will send an early INVITE each time a key is pressed when a user dials a number. If set

thus far; Otherwise, no INVITE is

)Dial” button is pressed or after about 5 seconds have elapsed if the user

Dial” button. The “Yes” option should be used ONLY if there is a SIP

server supports 484 Incomplete Address response. Otherwise,

IP

Dial Plan Prefix

Sets the prefix added to each dialed number.

parameters. Loudest volume: +6dB Lowest volume: -6dB.

Canceller (LEC)

communication.

Select the value according to the local Telco standard where the GXW4248 is installed.
Please refer to the pull down list to select.

to “Yes”, an INVITE is sent using the dial-number coll ected
sent until the “(Re­forgets to press the “Re­proxy configured and the proxy
the call will likely be rejected by the proxy (with a 404 Not Found error).

This feature is NOT designed to work with and should NOT be enabled for direct IP-to­calling.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 44 OF 56

Dial Plan

Dial Plan Rules:

1. Accept Digits: 1,2,3,4,5,6,7,8,9,0 , *, #, A,a,B,b,C,c,D,d

add a leading 1 to all numbers dialed, vice versa will remove a 1 from

Block any number of leading digits 1900 and add prefix 1617 for any dialed 7 digit

numbers of leading digit 1

and leading exchange number between 2 and 9; If leading digit is 2, replace leading

ocal area code (617) numbers by dialing 7

dial strings such as *123 to activate voice mail or other

application provided by service provider. In this case * should be predefined inside dial plan

2. Grammar: x - any digit from 0-9;
a. xx+ - at least 2 digits number;

b. xx. – at least 2 digits number;
c. ^ - exclude;
d. [3-5] - any digit of 3, 4, or 5;
e. [147] - any digit 1, 4, or 7;
f. <2=011> - replace digit 2 with 011 when dialing
g. < =1> -

the number dialed

h. | - or

• Example 1: {[369]11 | 1617xxxxxxx} –
Allow 311, 611, 911, and any 10 digit numbers of leading digits 1617

• Example 2: {^1900x+ | <=1617>xxxxxxx} –

numbers

• Example 3: {1xxx[2-9]xxxxxx | <2=011>x+} –
Allow any length of number with leading digit 2 and 10 digit-

digit 2 with 011 before dialing.

3. Default: Outgoing - {x+}

Example of a simple dial plan used in a Home/Office in the US:

{ ^1900x. | <=1617>[2-9]xxxxxx | 1[2-9]xx[2-9]xxxxxx | 011[2-9]x. | [3469]11 }

Explanation of example rule (reading from left to right):

• ^1900x. - prevents dialing any number started with 1900

• <=1617>[2-9]xxxxxx - allows dialing to l

numbers and 1617 area code will be added automatically

• 1[2-9]xx[2-9]xxxxxx |- allows dialing to any US/Canada Number with 11 digits length

• 011[2-9]x. - allows international calls starting with 011

[3469]11 - allow dialing special and emergency numbers 311, 411, 611 and 911

Note: In some cases user wishes to

feature and the Dia l Plan will be: { [x*]+ }.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 45 OF 56

Use # as Dial Key

Allows users to configure the “#” key as the “Send” (or “Dial”) key. If set to “Yes”, “#” will send

the number. In this case, this key is essentially equivalent to the “Dial” key. If set to “No

”, this

No Key Entry

Default is 4 seconds. Call will be completed within this time interval if no additional key entry

Off-Hook Auto-

Determines how many seconds after off-hook to wait before autodialing the extension set under

Enable Call

Default is Yes. (If Yes, call features using star codes will be supported locally)

Disable Call

Default is No. If set to YES Call Waiting indication information will not be provided to analog

Disable Call

Default is No. If set to YES Call Waiting caller ID will not be provided to analog phone

Disable Call

Default is No. This is to disable the stutter Call Waiting Tone when a Call Waiting call arrives.

Disable Receiver

Default is No. If YES, ROH tone will not be played after off hook for 60 seconds.

Disable Reminder

Default is No. This is to disable the Reminder Ring that is played when a call is waiting on hold

Disable Visual

Visual message indicator is a special on-hook caller ID type message that enables and

has this feature enabled by

may mistakenly treat this CID

Visual MWI Type

This is the type of signal sent to the analog phone to make it turn the lamp ON upon receiving a
Voice mail. Check the phone’s manual to find out what signal is supported, FSK (default) or

Transfer on

Defines whether the call is transferred to the other party if the conference initiator hangs up.

Disable Bellcore-

Disable Bellcore-style 3-Way C onferen ce

“#” key can be included as part of number.

Timeout

Dial Delay

Features

Waiting

Waiting Caller ID

Waiting Tone

Offhook Tone

Ring for On-Hold
Call

occurs.

Advanced Port Settings. The range is 0 to 60 second s.

phone connected to this FXS port.

connected to this FXS port.

The CWCID will still be displayed.

and the analog phone goes on-hook.

MWI

Conference
Hangup

style 3-Way
Conference

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 46 OF 56

disables the message waiting light on certain phones. GXW4248
default. However, certain phones (rare) that do not support it
signal as an incoming call. A configuration option is needed to turn on MWI in this case.

Neon.

Send Hook Flash

Event

Default is No. If set to yes, flash will be sent as a DTMF event.
Ring Timeout

Incoming call will stop ringing when not picked up given a specific period of time.

Delayed Call

Default value is 20 seconds. In case this feature activated using * codes (*92 code), the call

Send Anonymous

If this parameter is set to “Yes”, the “From” header along with Privacy and

cking

Anonymous Call

Default is No. If set to Yes, incoming calls with anonymous Caller ID will be rejected with 486

Hunting Group

Linear and Circular. Linear style will sort the call to the lowest-numbered available line, this is

robin". If a call is

assigned to line 1, the next call goes to 2 and the next to 3. The succession throughout each of

ious lines becomes available. When the end of the

hunt group is reached, the hunting starts over at the first line. Lines are skipped if they are still

Hunting Group

Default is 20 seconds. If call is not answered within this designated time period, the call will be

Special Feature

Default is Standard. Choose the selection to meet some special requirements from Softswitch

Ring Tones

Distinctive

Custom Ring Tone 1 to 3 with associate Caller ID: when selected, if Caller ID is configured,

is from the Caller ID.

System Ring Tone is used for all other calls. When selected but no Caller ID is configured, the

Distinctive ring tones can be configured

t also for matching prefixes. In this case symbol * (star)

or distinctive ring tone

f configured as *617, Ring Tone 1 will be used in case of call arrived from Massachusetts. Any

other incoming call will ring using cadence defined in parameter System Ring Cadence located

Forward Wait
Timeout

Rejection

Type

Ring Timeout

will be forwarded after this preconfigured amount of time.

P_Asserted_Identity headers in outgoing INVITE message will be set to anonymous, blo
Caller ID.

Busy message.

also called “serial hunting”. Circular style will distribute the calls "round-

the lines continues even if one of the prev

busy on a previous call. These two hunting styles can be configured from the Profile_x page.

forwarded to the next member of a Hunt Group.

vendors. Example of vendors - CBCOM, RNK.

Ringtone

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 47 OF 56

then the device will ONLY uses this ring tone when the incoming call

selected ring tone will be used for all incoming calls.
not only for matching whole number, bu
will be used.

If server supports Alert-Info header and standard ring tone set (Bellcore)
1-10 is specified, then the ring tone in the Alert-Info header from server will be used.

For example:

I

under Advanced Settings Configuration page.

Ring Tones

Configure ring cadences according to preference.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 48 OF 56

Port Settings

SIP User ID

User account information, provided by VoIP service provider (ITSP).
Usually in the form of digit similar to phone number or actually a

Authenticate ID

SIP service subscriber’s Authenticate ID used for authentication.
Password

SIP service subscriber’s account password for GXW4248 to register
Name

Any name to identify this specific user.

Profile

Select the corresponding Profile ID (1/2/3/4)

Enable FXS (TR-069)

Enable or disable the FXS port.

Advanced Port

Settings

Configure an auto dial number when offhook.

Hunting Group

Assign this port to a certain hunting group

FXO Mapping

Map to FXO Port #

This is used only when peering with a Grandstream GXW410x.

8, meaning line 1 to 8 of the

Map to FXO Gateway

This is used when peering with an FXO gateway of any brand. You
have to specifically mention the IP and sip port where call will be sent
And Port

Sip port that will be annexed to the IP address above.

Offhook Auto-dial

TABLE 11: FXS PORTS

phone number.

Can be
identical to or different from SIP User ID.

to (SIP) servers of ITSP.

Default 1, Supported values are 1­GXW410x device where the port will be mapped to.

IP

to.

SAVING THE CONFIGURATION CHANGES

After user makes a c hange to the configuration, press t he “ Upd ate” b utto n i n th e C onf igur at io n Me nu. T he
web browser will then display a message window to confirm saved changes.

Grandstream recommends reboot or power cycle the gateway after saving changes.

REBOOTING FROM REMOTE

Press the “Reboot ” b utto n at the bottom of the c o nf igu ration menu to reboot the p hone r emotely. The web

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 49 OF 56

browser will then dis pl a y a message window to confirm that reboot is underwa y. Wait 30 seconds to log in
again.

CONFIGURATION THROUGH A CENTRAL SERVER

Grandstream GXW4248 can be automatically configured from a central provisioning system.

When GXW4248 boots up, it wi ll send TFTP or HTTP/HTTPS requests t o download configuration f iles,
“cfg000b82xxxxxx” and “cfg00082xxxxxx.xml”, where “000b82xxxxxx” is the LAN MAC address of the
GXW4248. If the downloa d of “cfgxxxxxxxxxxxx.xml” is not suc cessful, the provision program will issue
request a generic configuration file “cfg.xml”. Configuration file name should be in lower case letters.

The configuration d ata can be downloa ded via TFTP or HTTP/HTTPS from the central serve r. A service
provider or an enterpr ise with large deployment of GXW4248 can easil y manage the configuration and
service provisioning of individual devices remotely from a central server.

Grandstream provides a central provisioning system GAPS (Grandstream Automated Provisioning
System) to support automated configuration of Grandstream devices. GAPS uses enhanced (NAT
friendly) TFTP or HTT P (thus no NAT issues) and other communicat ion protocols to communicate with
each individual Grandstream device for firmware upgrade, remote reboot, etc.

Grandstream provides G APS service to VoIP service providers. Use GAPS for either simple r edirection
or with certain special provisioning settings. At boot-up, Grandstream devices by default point to
Grandstream provisioning server GAPS, based on the unique MAC address of each device, GAPS
provision the devices with redirection settings so that they will be redirected to customer’s TFTP or
HTTP/HTTPS server for further provisioning.

Grandstream also pro vides configuration tools (W indows and Linux/Un ix version) to facilitate the task of
generating device configuration files. The Grandstream configuration tools are free to end users. The
configuration tools and configuration templates are available for download from

http://www.grandstream.com/support/tools .

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 50 OF 56

SOFTWARE UPGRADE

Software upgrade can be done via either TFTP or HTTP/HTTPS. The corresponding configuration
settings are in the ADVANCED SETTINGS configuration page.

FIRMWARE UPGRADE THROUGH TFTP/HTTP/HTTPS

To upgrade via TFTP or HTTP/HTTPS, the “Firm ware Upgrade and Provisio ning upgrade v ia” field needs
to be set to TFTP HTTP or HTTPS, respectively. “Firmware Server Pat h” needs to be set to a va lid URL
of a TFTP or HTTP server, server name can be in either FQ DN or IP address form at. Here are ex amples
of some valid URL.

e.g. firmware.mycompany.com:6688/Grandstream/1.0.7.6
e.g. firmware.grandstream.com

NOTES:

 Firmware upgrade server in I P address format c an be configured via IVR. Please refer to the

CONFIGURATION GUIDE section for instructions. If the server is in F QDN f ormat, it m ust be s et
via the web configuration interface.

 Grandstream recommends end-user use the Grandstream HTTP server. Its address can be found

http://www.grandstream.com/support/firmware . Currently the HTTP firmware server URL is

at
firmware.grandstream.com. For large com panies, we recommend to maintain their own T FTP/
HTTP/HTTPS server for upgrade and provisioning procedures.

 Once a “Firmware Server Path” is set, user needs to updat e the sett ings and r ebo ot the dev ice. If

the configured firmware server is foun d and a ne w cod e im age is avai lable, the GXW will attempt
to retrieve the new image files by downloading them into the GXW420x ’s SRAM. During this
stage, the GXW’s LEDs will blink until the checking/downloading process is completed. Upon
verification of checksum, the new code image will then be saved into the Flash. If
TFTP/HTTP/HTTPS fails for an y reason ( e.g. TFTP/HTTP/HTTPS server is not respond ing, th ere
are no code image files avail able for upgrad e, or checks um test fails, etc), the GXW will stop the
TFTP/HTTP/HTTPS process and simply boot using the existing code image in the flash.

 Firmware upgrade may take as long as 15 to 30 minutes over Int ernet, or just 5 m inutes if it is

performed on a LAN. It is recommended to conduct firmware upgrade in a controlled LAN
environment if possible. For users who do not have a local firmware upgrade server,
Grandstream provides a NAT-friendly TFTP server on the public Internet for firmware upgrade.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 51 OF 56

 Grandstream’s latest firmware is available http://www.grandstream.com/support/firmware .

Oversea users are strongly recommended to download the binary files and upgrade firmware
locally in a controlled LAN environment.

 Alternatively, user can download a free TFTP or HTTP server and conduct local firmware upgrade.

A free windows version TFTP server is available for download from

http://support.solarwinds.net/updates/New-customerFree.cfm. Our latest official release can be

downloaded from http://www.grandstream.com/y-firmware.htm.

INSTRUCTIONS FOR LOCAL FIRMWARE UPGRADE:

1. Unzip the file and put all of them under the root directory of the TFTP server.

2. Put the PC running the TFTP server and the GXW4248 device in the same LAN segment.

3. TFTP server's securit y sett ings s hou ld be c h ang ed f rom "Receive Only" to "Transmit Only" for the
firmware upgrade.

4. Configure the Firmware Server Path with the IP address of the PC

5. Update the change and reboot the unit.

CONFIGURATION FILE DOWNLOAD

Grandstream SIP Device can be configured via Web Interface as well as via Configuration File through
TFTP or HTTP/HTTPS. “Config Server Path” is the TFTP or HTTP/HTTPS server path for configuration
file. It needs to be set to a valid URL, either in FQDN or IP address format. The “Config Server Path” can
be same or different from the “Firmware Server Path”.

A configuration parameter is associated with each particular field in the web configuration page. A
parameter consists of a Capital letter P and 1 to 3 (Could be extended to 4 in the future) digit numeric
numbers. i.e., P2 is associated with “Admin Password” in the ADVANCED SETTINGS page. For a
detailed parameter list, please refer to the corresponding firmware release configuration template.

When a Grandstream device boots up or reboots, it will issue a request for a configuration file
“cfgxxxxxxxxxxx x”, where “xxx xxxxxxxxx” is the MAC address of t he device, i.e., “cfg000b820 102ab”. In
addition, device will also requests a XML configuration file “cfgxxxxxxxxxxxx.xml”. If the download of
“cfgxxxxxxxxxxxx.xml” is not successful, the provision program will issue a request for a generic
configuration file “cfg.xml”. Configuration file name should be in lower case letters.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 52 OF 56

FIRMWARE AND CONFIGURATION FILE PREFIX AND POSTFIX

10080

1

1

Firmware Prefix and Postfix allows device to d ownload the firm ware name with the matching Prefix and
Postfix. This mak es it poss ible t o stor e ALL of the f irmwar es with different version in on e singl e dir ector y.
Similarly, Config File Prefix and Postfix allows d evice t o download the conf iguration f ile with th e matching
Prefix and Postfix. Thus multiple configuration files for the same device can be stored in one directory.

In addition, when the field “Check New Firmware only when F/W pre/suffix changes” is selected, the
device will only issue firmware upgrade request if there are changes in the firmware Prefix or Postfix.

MANAGING FIRMWARE AND CONFIGURATION FILE DOWNLOAD

When “Automatic Upgrade” is set to “Yes”, Service Provider can use P193 to have the devices
periodically check with either Firmware Ser ver or Con fig Server, whenever the y are defined . This allo ws
the device periodica lly ch eck whether there is any ne w changes need to b e taken, sim ilar to the An tiVirus
Software to upgrade the Virus Definition files. Screenshot is below:

Automatic Upgrade:

No Yes, every

Yes, daily at hour

minutes(60-5256000).

(0-23). Yes, weekly on day

(0-6).

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 53 OF 56

RE STOR E FACTORY D EFAULT SETTING

FACTORY RESET

WARNING! Restoring the Factory Default Sett ing will DEL ETE all configuration in f orm ation of the phone.

Please BACKUP or PRIN T out all the settings before you approac h to following steps. Grandstream will
not take any responsibility if you lose all the parameters of setting and cannot connect to your VoIP
service provider.

There are two (2) methods for resetting your unit:

RESET BUTTON

Reset default factory settings following these four (4) steps:

1. Unplug the Ethernet cable.

2. Locate a needle-sized hole on the back panel of the gateway unit next to the power

connection.

3. Insert a pin in this hole, and press for more than 4 seconds.

4. Take out the pin. All unit settings are restored to factory settings.

IVR COMMAND

Reset default factory settings using the IVR Prompt (Table 5):

1. Dial “***” for voice prompt.

2. Enter “099” and wait for “reset” voice prompt.

3. Enter the encoded MAC address (Look below on how to encode MAC address).

4. Wait 15 seconds and device will automatically reboot and restore factory settings.

Encode the MAC Address

1. Locate the MAC address of the device. It is the 12 digit HEX number on the bott om of the

unit.

2. Key in the MAC address. Use the following mapping:

0-9: 0-9

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 54 OF 56

A: 22 (press the “2” key twice, “A” will show on the LCD)
B: 222
C: 2222
D: 33 (press the “3” key twice, “D” will show on the LCD)
E: 333
F: 3333

For example: if the MAC address is 000b8200e395, it should be keyed in as “0002228200333395”.

NOTE:

1. Factory Reset will be disabled if the “Lock keypad update” is set to “Yes”.

2. If still have difficulties to get access to the device, pushing the reset button during booting up will
trigger the RECOVERY MODE, and device will use static IP 192.168.1.234/24. You may need a direct
connection to access the configuration page.

FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 55 OF 56

FCC Warning

This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible for compliance could
void the user's authority to operate the equipment.

FCC 15.105 Class B
(b) For a Class B digital device or peripheral, the instructions furnished the user shall include the
following or similar statement, placed in a prominent location in the text of the manual:
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
—Consult the dealer or an experienced radio/TV technician for help.

FIRMWARE 1.0.3.4

GXW42XX USER MANUAL

PAGE 56 OF 56