GXW42xx firmware contains third-party software licensed under the GNU General Public License (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 1.0.0.49 GXW42XX USER MANUAL PAGE 5 OF 54
This section documents significant changes from previous versions of GXW42xx user manuals. Only
major new features or major document updates are listed here. Minor updates for corrections or editing
are not documented here.
FIRMWARE 1.0.0.49 GXW42XX USER MANUAL PAGE 6 OF 54
Thank you for purchasing the Grandstream GXW42XX Analog FXS IP Gateway. The GXW42XX offers
an easy to manage, easy to configure IP communications solution for any business with virtual and/or
branch locations. The GXW42XX 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 direct IP-IP Calling. This IP Analog Gateway is very easy to manage and scalable,
specifically designed to be an easy to use and affordable VoIP solution for the small – medium business
or enterprise.
GATEWAY GXW42XX OVERVIEW
The new GXW42XX series 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 GXW42XX features 16,24 or 32 port FXS interface for analog telephones, dual 10/100/1000Mbps
network ports, and RJ21 analog port (1 for 4216 and 4224, 2 for 4232). In addition, it supports the option
of 4 SIP Server profiles, caller ID for various countries/regions, T.38 fax, flexible dialing plans, security
protection (SIPS/TLS), comprehensive 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 GXW42XX is compliant with various safety standards including FCC/CE. Its power adapter is
compliant with UL standard.
Use of alternative power adapter may permanently damage the unit.
Warning: use only the power adapter included in the GXW42XX package.
WARRANTY
Grandstream has a reseller agreement with our reseller customers. End users should contact the
FIRMWARE 1.0.0.49 GXW42XX USER MANUAL PAGE 7 OF 54
company from whom the product was purchased, for replacement, repair or refund.
If you purchased the product directly from Grandstream, contact your Grandstream Sales and Service
Representative for an RMA (Return Materials Authorization) number. Grandstream reserves the right to
change the warranty policy without prior notification.
Caution:
Changes or modifications to this product not expressly approved by Grandstream, or operation
of this product in any way other than as detailed by this User Manual, could void your manufacturer
warranty.
Reproduction or transmittal of the entire or any part, in any form or by any means, electronic or print, for
any purpose without the express written permission of Grandstream Networks, Inc. is not permitted.
FIRMWARE 1.0.0.49 GXW42XX USER MANUAL PAGE 8 OF 54
y Pins 25 and 50, the last pair, are not used.
y All LED lights display green when ON.
y 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
ySlow blinking of FXS LED together indicates a firmware upgrade or provisioning state.
FIRMWARE 1.0.0.49 GXW42XX USER MANUAL PAGE 12 OF 54
The GXW42XX series is a next generation IP voice gateway that is interoperable and compatible with
leading IP-PBXs, Softswitches and SIP platforms. The GXW42XX series FXS gateway is autoconfigurable, remotely manageable and scalable. The GXW42XX series gateways come in three models
- the GXW4216, GXW4224 and GXW4232, each offering superb voice quality, traditional telephony
functionality, easy deployment, and 16, 24 and 32 FXS ports respectively. Each model features flexible
dialing plans, integrated call routing to support a pure IP network call and an external power supply.
SOFTWARE FEATURES OVERVIEW
x 16, 24 or 32 FXS ports
x RJ-45 Ethernet ports
x 4 configurable SIP profiles
x Supports Voice Codecs:
G711(a/µ, Annex I & II), G723.1A, G726 (ADPCM with 16/24/32/40 bit rates), G729 A/B, iLBC,
T.38 Fax
x Comprehensive Dial Plan support for Outgoing calls.
x G.168 Echo Cancellation
x Voice Activation Detection (VAD), Comfort Noise Generation (CNG), and Packet Loss
Concealment (PLC)
xSupports PSTN/PBX analog telephone sets or analog trunks
TABLE 3: GXW42XX SOFTWARE FEATURES
GXW4216 GXW4224 GXW4232
Telephone Interfaces
SIP Provisioning
Network Interface
Number of
Concurrent Calls
(except when using
SRTP)
FIRMWARE 1.0.0.49 GXW42XX USER MANUAL PAGE 13 OF 54
Voice Activity Detection
(VAD) with CNG (comfort
noise generation) and PLC
LEC with NLP Packetized
Voice Protocol Unit
(supports RTP/RTCP and
AAL2 protocol), G.168
compliant Echo
Modem detection &
Voice Activity Detection
(VAD) with CNG (comfort
) and PLC
(packet loss concealment),
LEC with NLP Packetized
Voice Protocol Unit
(supports RTP/RTCP and
AAL2 protocol), G.168
compliant Echo
Modem detection &
Voice Activity Detection
noise generation) and PLC
(packet loss concealment),
LEC with NLP Packetized
Voice Protocol Unit
(supports RTP/RTCP and
AAL2 protocol), G.168
compliant Echo
Dynamic Jitter
Modem detection &
G.711 + Annex I (PLC),
Annex II (VAD/CNG format)
encoder and decoder, G.722
(pending), G.723.1A,
G.726(ADPCM with
16/24/32/40 bit rates),
G.726 provides
proprietary VAD, CNG, and
signal power estimation,
Voice Play Out unit
fixed and
adaptive jitter buffer, clock
synchronization), AGC
Status output, Decoder
controlling via voice packet
G.711 + Annex I (PLC),
Annex II (VAD/CNG format)
encoder and decoder, G.722
(pending), G.723.1A,
16/24/32/40 bit rates),
G.726 provides
proprietary VAD, CNG, and
signal power estimation,
Voice Play Out unit
(reordering, fixed and
adaptive jitter buffer, clock
synchronization), AGC
Status output, Decoder
rolling via voice packet
G.711 + Annex I (PLC),
Annex II (VAD/CNG format)
encoder and decoder, G.722
(pending), G.723.1A,
G.726(ADPCM with
16/24/32/40 bit rates),
G.726 provides
proprietary VAD, CNG, and
signal power estimation,
lay Out unit
(reordering, fixed and
adaptive jitter buffer, clock
synchronization), AGC
Status output, Decoder
controlling via voice packet
DHCP Server/Client
T.38 compliant Group 3 Fax
Relay up to 14.4kpbs and
switch to G.711 for Fax
Fax Datapump V.17, V.21,
V.27ter, V.29 for T.38 fax
T.38 compliant Group 3 Fax
Relay up to 14.4kpbs and
switch to G.711 for Fax
tapump V.17, V.21,
V.27ter, V.29 for T.38 fax
T.38 compliant Group 3 Fax
Relay up to 14.4kpbs and
switch to G.711 for Fax
Fax Datapump V.17, V.21,
V.27ter, V.29 for T.38 fax
DiffServ, TOS, 802.1P/Q
TOS, 802.1P/Q
DiffServ, TOS, 802.1P/Q
http://arttel.ru
Voice over Packet
Capabilities
(VAD) with CNG (comfort
noise generation
(packet loss concealment),
Cancellation, Dynamic Jitter
Buffer,
auto-switch to G.711
Output: 12V DC, 5.0A
128×32 pixel
1 RJ21 (50 pins) 1 RJ21 (50 pins) 2 RJ21 (50 pins)
Yes
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
http://arttel.ru
Humidity: 10Á to 90% Non-condensing
Mounting
Onhook Voltage
Ring Voltage
Ring Frequency
Short Haul Loop
Outdoor Protection
Signaling
EMC
Safety
Compliance
Desktop and Rack mount
Fixed, 48V
50Vrms (balanced ringing)
20-50Hz
2REN, up to 6000ft on 24 AWG wire
Over-voltage Protection and surge immunity
FXS Loop-start
EN55022/EN55024 and FCC part15 Class B
FIRMWARE 1.0.0.49 GXW42XX USER MANUAL PAGE 16 OF 54
http://arttel.ru
GXW42XX LCD MENU
The GXW42XX gateway series includes a small LCD screen for the display of basic information. The LCD
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.
FIGURE 3: LCD MENU
FIRMWARE 1.0.0.49 GXW42XX USER MANUAL PAGE 17 OF 54