Patton electronic 49040 User Manual

For Quick
Start Installation
SmartNode 4940 Series
Multi-Port T1/E1/PRI Enterprise VoIP Media Gateway
User Manual
Sales Office: +1 (301) 975-1000
Technical Support: +1 (301) 975-1007
E-mail: support@patton.com
WWW: www.patton.com
Revised: February 7, 2012
Patton Electronics Company, Inc.
7622 Rickenbacker Drive
Gaithersburg, MD 20879 USA
Tel: +1 (301) 975-1000 Fax: +1 (301) 869-9293
Support: +1 (301) 975-1007
Web: www.patton.com
E-mail: support@patton.com
Trademark Statement
The terms SmartNode and SmartWare are trademarks of Patton Electronics Company. All other trademarks presented in this document are the property of their respective owners.
Copyright © 2012, Patton Electronics Company. All rights reserved.
The information in this document is subject to change without notice. Patton Elec­tronics assumes no liability for errors that may appear in this document.
Important Information
To use virtual private network (VPN) and/or AES/DES/3DES encryption capabilities with the SmartNode 4940, you may need to purchase additional licenses, hardware, software, network connection, and/or service. Contact sales@patton.com or +1 (301) 975-1000 for assistance.
Warranty Information
The software described in this document is furnished under a license and may be used or copied only in accordance with the terms of such license. For information about the license, see Appendix F, "End user license agreement" on page 57 or go to www.patton.com.
Patton Electronics warrants all SmartNode router components to be free from defects, and will—at our option—repair or replace the product should it fail within one year from the first date of the shipment.
This warranty is limited to defects in workmanship or materials, and does not cover customer damage, abuse or unauthorized modification. If the product fails to perform as warranted, your sole recourse shall be repair or replacement as described above. Under no condition shall Patton Electronics be liable for any damages incurred by the use of this product. These damages include, but are not limited to, the following: lost profits, lost savings and incidental or consequential damages arising from the use of or inability to use this product. Patton Electronics specifically disclaims all other warran­ties, expressed or implied, and the installation or use of this product shall be deemed an acceptance of these terms by the user.

Summary Table of Contents

1 General information...................................................................................................................................... 13
2 Applications overview.................................................................................................................................... 20
3 SmartNode installation.................................................................................................................................. 22
4 Initial configuration ...................................................................................................................................... 27
5 Contacting Patton for assistance ................................................................................................................... 34
A Compliance information .............................................................................................................................. 37
B Specifications ................................................................................................................................................ 41
C Cabling ......................................................................................................................................................... 47
D Port pin-outs ................................................................................................................................................ 52
E SmartNode 4940 factory configuration ........................................................................................................ 55
F End user license agreement ........................................................................................................................... 57
3

Table of Contents

Summary Table of Contents ........................................................................................................................... 3
Table of Contents ........................................................................................................................................... 4
List of Figures ................................................................................................................................................. 7
List of Tables .................................................................................................................................................. 8
About this guide ............................................................................................................................................. 9
Audience................................................................................................................................................................. 9
Structure................................................................................................................................................................. 9
Precautions........................................................................................................................................................... 10
Safety when working with electricity ...............................................................................................................11
General observations .......................................................................................................................................12
Typographical conventions used in this document................................................................................................ 12
General conventions .......................................................................................................................................12
1 General information...................................................................................................................................... 13
SmartNode 4940 overview ....................................................................................................................................14
SN4940 model codes ......................................................................................................................................15
SN4941 model codes ......................................................................................................................................15
SmartNode 4940 rear panel...................................................................................................................................16
SmartNode 4940 front panel.................................................................................................................................18
2 Applications overview.................................................................................................................................... 20
Introduction..........................................................................................................................................................21
Application—Convert Legacy PBX to VoIP ..........................................................................................................21
3 SmartNode installation.................................................................................................................................. 22
Planning the installation ........................................................................................................................................23
Site log ............................................................................................................................................................23
Network information ......................................................................................................................................23
Network Diagram ...........................................................................................................................................23
IP related information .....................................................................................................................................23
Software tools .................................................................................................................................................24
AC Power Mains .............................................................................................................................................24
Location and mounting requirements .............................................................................................................24
Installing the gateway ............................................................................................................................................24
Placing the SmartNode ...................................................................................................................................24
Installing cables ...............................................................................................................................................24
Connecting the PRI ..................................................................................................................................25
Connecting the 10/100/1000Base-T Ethernet cable
Connecting the power supply ....................................................................................................................26
4 Initial configuration ...................................................................................................................................... 27
Introduction..........................................................................................................................................................28
Configuring the desired IP address ........................................................................................................................28
..................................................................................25
4
SmartNode 4940 User Manual Table of Contents
Factory-default IP settings ...............................................................................................................................28
Connecting the SmartNode to the network...........................................................................................................28
Loading the configuration (optional).....................................................................................................................29
Bootloader.............................................................................................................................................................30
Start Bootloader ..............................................................................................................................................30
Start-up with factory configuration .................................................................................................................30
Load a new application image (SmartWare) via TFTP ....................................................................................30
Load a new application image (SmartWare) via the serial link .........................................................................32
Additional information..........................................................................................................................................33
5 Contacting Patton for assistance ................................................................................................................... 34
Introduction..........................................................................................................................................................35
Contact information..............................................................................................................................................35
Patton support headquarters in the USA .........................................................................................................35
Alternate Patton support for Europe, Middle East, and Africa (EMEA) ..........................................................35
Warranty Service and Returned Merchandise Authorizations (RMAs)...................................................................35
Warranty coverage ..........................................................................................................................................35
Out-of-warranty service .............................................................................................................................36
Returns for credit ......................................................................................................................................36
Return for credit policy .............................................................................................................................36
RMA numbers ................................................................................................................................................36
Shipping instructions ................................................................................................................................36
A Compliance information .............................................................................................................................. 37
Compliance ...........................................................................................................................................................38
EMC ...............................................................................................................................................................38
Safety ..............................................................................................................................................................38
PSTN Regulatory ............................................................................................................................................38
Radio and TV Interference ....................................................................................................................................38
FCC Part 68 (ACTA) Statement ...........................................................................................................................39
Industry Canada Notice ........................................................................................................................................39
CE Declaration of Conformity..............................................................................................................................40
Authorized European Representative.....................................................................................................................40
B Specifications ................................................................................................................................................ 41
Voice connectivity .................................................................................................................................................42
Data connectivity ..................................................................................................................................................42
Voice processing (signalling dependent) ................................................................................................................42
Fax and modem support........................................................................................................................................42
Voice signalling ...............................................................................................................................
......................43
Voice routing—session router................................................................................................................................43
IP services..............................................................................................................................................................43
Management .........................................................................................................................................................44
System...................................................................................................................................................................44
Physical .................................................................................................................................................................44
Identification of the SmartNode devices via SNMP...............................................................................................45
5
SmartNode 4940 User Manual Table of Contents
C Cabling ......................................................................................................................................................... 47
Introduction..........................................................................................................................................................48
Console .................................................................................................................................................................48
Ethernet ................................................................................................................................................................49
E1 PRI ..................................................................................................................................................................50
T1 PRI ..................................................................................................................................................................51
D Port pin-outs ................................................................................................................................................ 52
Introduction..........................................................................................................................................................53
Console port..........................................................................................................................................................53
Ethernet ................................................................................................................................................................53
PRI port ................................................................................................................................................................54
E SmartNode 4940 factory configuration ........................................................................................................ 55
Introduction..........................................................................................................................................................56
F End user license agreement ........................................................................................................................... 57
End User License Agreement.................................................................................................................................58
1. Definitions ..................................................................................................................................................58
2. Title ............................................................................................................................................................58
3. Term ...........................................................................................................................................................58
4. Grant of License ..........................................................................................................................................58
5. Warranty ....................................................................................................................................................58
6. Termination ................................................................................................................................................59
7. Other licenses .............................................................................................................................................59
6

List of Figures

1 SmartNode 4940 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2 SN4940 rear panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3 SmartNode 4940 front panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4 Internet telephony IAD application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5 Power connector location on rear panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6 Connecting the SmartNode to the network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7 Connecting a serial terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8 Typical Ethernet straight-through cable diagram for 10/100Base-T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
9 Typical Ethernet straight-through cable diagram for 1000Base-T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10 Connecting an E1 PRI port to an NT1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
11 E1 PRI port crossover cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
12 Connecting a T1 PRI port to an NT device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
13 T1 PRI crossover cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
14 EIA-561 (RJ-45 8-pin) port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7

List of Tables

1 General conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2 SmartNode 4940 PRI Ports and Voice Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3 Rear panel ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4 SN4940 Front and Rear panel LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5 Sample site log entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6 Factory default IP address and network mask configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7 SmartNode Models and their Unique sysObjectID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8 RJ45 socket 10/100Base-T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
9 RJ45 socket 1000Base-T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
10 RJ-45 socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8

About this guide

This guide describes the SmartNode 4940 hardware, installation and basic configuration. For detailed software configuration information refer to the SmartWare Software Configuration Guide and the available Configura- tion Notes.

Audience

This guide is intended for the following users:
Operators
Installers
Maintenance technicians

Structure

This guide contains the following chapters and appendices:
Chapter 1 on page 13 provides information about router features and capabilities
Chapter 2 on page 20 contains an overview describing router operation and applications
Chapter 3 on page 22 provides hardware installation procedures
Chapter 4 on page 27 provides quick-start procedures for configuring the SmartNode router
Chapter 5 on page 34 contains information on contacting Patton technical support for assistance
Appendix A on page 37 contains compliance information for the router
Appendix B on page 41 contains specifications for the routers
Appendix C on page 47 provides cable recommendations
Appendix D on page 52 describes the router’s ports and pin-outs
Appendix E on page 55 lists the factory configuration settings for SmartNode 4940
Appendix F on page 57 provides license information that describes acceptable usage of the software pro-
vided with the SmartNode 4940
For best results, read the contents of this guide before you install the router.
9
SmartNode 4940 User Manual

Precautions

Notes, cautions, and warnings, which have the following meanings, are used throughout this guide to help you become aware of potential problems. Warnings are intended to prevent safety hazards that could result in per­sonal injury. Cautions are intended to prevent situations that could result in property damage or impaired functioning.
Note
IMPORTANT
CAUTION
CAUTION
WARNING
WARNING
A note presents additional information or interesting sidelights.
The alert symbol and IMPORTANT heading calls attention to important information.
The alert symbol and CAUTION heading indicate a potential haz­ard. Strictly follow the instructions to avoid property damage.
The shock hazard symbol and CAUTION heading indicate a potential electric shock hazard. Strictly follow the instructions to avoid property damage caused by electric shock.
The alert symbol and WARNING heading indicate a potential safety hazard. Strictly follow the warning instructions to avoid personal injury.
The shock hazard symbol and WARNING heading indicate a potential electric shock hazard. Strictly follow the warning instructions to avoid injury caused by electric shock.
10
SmartNode 4940 User Manual

Safety when working with electricity

Do not open the device when the power cord is connected. For systems
WARNING
without a power switch and without an external power adapter, line volt­ages are present within the device when the power cord is connected.
For devices with an external power adapter, the power adapter shall be a listed Limited Power Source The mains outlet that is utilized to power the device shall be within 10 feet (3 meters) of the device, shall be easily accessible, and protected by a circuit breaker in compliance with local regu­latory requirements.
For AC powered devices, ensure that the power cable used meets all appli­cable standards for the country in which it is to be installed.
For AC powered devices which have 3 conductor power plugs (L1, L2 & GND or Hot, Neutral & Safety/Protective Ground), the wall outlet (or socket) must have an earth ground.
For DC powered devices, ensure that the interconnecting cables are rated for proper voltage, current, anticipated temperature, flammability, and mechanical serviceability.
WAN, LAN & PSTN ports (connections) may have hazardous voltages present regardless of whether the device is powered ON or OFF. PSTN relates to interfaces such as telephone lines, FXS, FXO, DSL, xDSL, T1, E1, ISDN, Voice, etc. These are known as “hazardous network voltages” and to avoid electric shock use caution when working near these ports. When disconnecting cables for these ports, detach the far end connection first.
Do not work on the device or connect or disconnect cables during periods of lightning activity
WARNING
This device contains no user serviceable parts. This device can only be repaired by qualified service personnel.
In accordance with the requirements of council directive 2002/ 96/EC on Waste of Electrical and Electronic Equipment (WEEE), ensure that at end-of-life you separate this product from other waste and scrap and deliver to the WEEE collection system in your country for recycling.
11
SmartNode 4940 User Manual
Always follow ESD prevention procedures when removing and replacing cards.
CAUTION
Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to safely channel unwanted ESD voltages to ground.
To properly guard against ESD damage and shocks, the wrist strap and cord must operate effectively. If no wrist strap is avail­able, ground yourself by touching the metal part of the chassis.

General observations

Clean the case with a soft slightly moist anti-static cloth
Place the unit on a flat surface and ensure free air circulation
Avoid exposing the unit to direct sunlight and other heat sources
Protect the unit from moisture, vapors, and corrosive liquids

Typographical conventions used in this document

This section describes the typographical conventions and terms used in this guide.

General conventions

The procedures described in this manual use the following text conventions:
Table 1. General conventions
Convention Meaning
Garamond blue type
Futura bold type Commands and keywords are in boldface font.
Futura bold-italic type Parts of commands, which are related to elements already named by the user, are
Italicized Futura type Variables for which you supply values are in italic font Futura type Indicates the names of fields or windows. Garamond bold type Indicates the names of command buttons that execute an action. < > Angle brackets indicate function and keyboard keys, such as <SHIFT>, <CTRL>,
[ ] Elements in square brackets are optional. {a | b | c} Alternative but required keywords are grouped in braces ({ }) and are separated
screen
node The leading IP address or nodename of a SmartNode is substituted with node in
SN The leading SN on a command line represents the nodename of the SmartNode # An hash sign at the beginning of a line indicates a comment line.
Indicates a cross-reference hyperlink that points to a figure, graphic, table, or sec­tion heading. Clicking on the hyperlink jumps you to the reference. When you have finished reviewing the reference, click on the Go to Previous View
button in the Adobe® Acrobat® Reader toolbar to return to your starting point.
in boldface italic font.
<C>, and so on.
by vertical bars ( | ) Terminal sessions and information the system displays are in
boldface italic font.
screen font
.
12

Chapter 1 General information

Chapter contents
SmartNode 4940 overview ....................................................................................................................................14
SN4940 model codes ......................................................................................................................................15
SN4941 model codes ......................................................................................................................................15
SmartNode 4940 rear panel...................................................................................................................................16
SmartNode 4940 front panel.................................................................................................................................18
13
SmartNode 4940 User Manual 1 • General information

SmartNode 4940 overview

As enterprises move toward unified communications, the SmartNode™ 4940 Enterprise VoIP Media Gate­way (see figure 1) provides a smooth transition by either IP-enabling traditional PBX systems for SIP trunking over existing Internet connection, adding PSTN-breakout for number portability, or enabling PSTN access for IP PBX and unified communications systems. Preserve investment in legacy phone equipment while taking the next step toward unified communications with Patton’s proven SmartNode™ VoIP solutions. .
Figure 1. SmartNode 4940
The SmartNode 4940 performs the following major functions:
Up to 120 VoIP Calls—With four T1/E1/PRI ports and one Gigabit Ethernet port.
Proven Interoperability—Interoperable with all the major-brand softswitches and IP-PBXs.
Comprehensive Signaling Protocol Support—Supports SIP, H.323, ISDN, and T1/E1 telephony—plus
T.38 and SuperG3 FAX—over TDM/PSTN and IP/Ethernet services simultaneously.
Transparent Telephony Features—Complex number manipulation and mapping for seamless integration
with existing infrastructures, CLIP, CLIR, hold, transfer and much more.
High Precision Clock—Delivers DECT PBX interoperability with reliable fax performance.
SmartNode 4940 overview 14
SmartNode 4940 User Manual 1 • General information

SN4940 model codes

The SmartNode 4940 series consists of several models. They differ in the number of PRI ports and voice chan­nels supported. All models come equipped with one 10/100/1000Base-T Ethernet port. The SmartNode 4940 PRI ports and voice channels are listed in table 2.
Table 2. SmartNode 4940 PRI Ports and Voice Channels
Model PRI Ports Voice Channels
SN4940/1E24V/EUI 1 24 SN4940/1E30V/EUI 1 30 SN4940/4E24V/EUI 4 24 SN4940/4E30V/EUI 4 30 SN4940/4E48V/EUI 4 48 SN4940/4E60V/EUI 4 60 SN4940/4E96V/EUI 4 96 SN4940/4E120V/EUI 4 120

SN4941 model codes

The high precision SmartNode 4941 models have a Stratum III clock. The Stratum III clock provides a clock source of < 5 ppm. For PBXs that used to rely on PSTN for accurate clock source, the SmartNode 4941 can provide a PSTN-equivalent high precision clock. The popular DECT PBX needs such high precision clocks.
Note
For high precision clock models, replace SN4940 with SN4941 in the model code.
SmartNode 4940 overview 15
SmartNode 4940 User Manual 1 • General information

SmartNode 4940 rear panel

The SmartNode 4940 rear panel ports are described in table 3.
0
/3
0
/ 2
0
/ 1
T
0
1
/0 / E
1
E
T
H
0
/ 1
C
o n
s
Reset
o le
R
S
­2
3
2
Power
SN4940/1E30V
0/0
T1/E1
T1/E1
PRI port 0/0
0/00/10/20/3
T1/E1
T1/E1
PRI ports 0/3–0/0
ETH 0/0
10/100/1000Base-T port
Figure 2. SN4940 rear panel
ConsoleETH 0/0
Reset
RS-232
SN4940/4E120V
ConsoleETH 0/0
Reset
RS-232
Console
RS-232 port
RESET
button
SmartNode 4940 rear panel 16
SmartNode 4940 User Manual 1 • General information
Table 3. Rear panel ports
Port Description
ETH 0/0
PRI 0/0 RJ-45 connector providing E1 (2.048Mbps) or T1(1.533 Mbps) PRI interface, meet-
PRI 0/1 RJ-45 connector providing E1 (2.048Mbps) or T1(1.533 Mbps) PRI interface, meet-
PRI 0/2 RJ-45 connector providing E1 (2.048Mbps) or T1(1.533 Mbps) PRI interface, meet-
PRI 0/3 RJ-45 connector providing E1 (2.048Mbps) or T1(1.533 Mbps) PRI interface, meet-
Console
DC power input Reset
Auto-MDX Gigabit-Ethernet port, RJ-45 (see WAN device (for example, a cable modem, DSL modem, or fiber modem). Note: Only full duplex modes are supported.
ing all requirements of ITU-T recommendations for G.703. Use a shielded E1 or T1 interface cable for 120 Ohm balanced connections to connect the SmartNode with an NT or ET, e.g. a PBX or LE.
ing all requirements of ITU-T recommendations for G.703. Use a shielded E1 or T1 interface cable for 120 Ohm balanced connections to connect the SmartNode with an NT or ET, e.g. a PBX or LE.
ing all requirements of ITU-T recommendations for G.703. Use a shielded E1 or T1 interface cable for 120 Ohm balanced connections to connect the SmartNode with an NT or ET, e.g. a PBX or LE.
ing all requirements of ITU-T recommendations for G.703. Use a shielded E1 or T1 interface cable for 120 Ohm balanced connections to connect the SmartNode with an NT or ET, e.g. a PBX or LE.
Used for service and maintenance, the Console port (see connector, connects the product to a serial terminal such as a PC or ASCII terminal (also called a dumb terminal).
Electricity supply socket. (see The reset button (see
Restart the unit with the current startup configuration—Press (for less than 1 second) and release the Reset button to restart the unit with the current startup configuration.
Restart the unit with factory default configuration—Press the Reset button for 5 seconds until the Power LED (see the unit with factory default configuration.
Restart the unit in bootloader mode (to be used only by trained SmartNode tech­nicians)—Starting with the unit powered off, press and hold the Reset button as you apply power to the unit. Release the Reset button when the Power LED starts blinking so the unit will enter bootloader mode.
figure 2
figure 2
) has three functions:
).
figure 3
figure 2
), connects the unit to an Ethernet
figure 2
on page 18) starts blinking to restart
), an RS-232 RJ-45
SmartNode 4940 rear panel 17
SmartNode 4940 User Manual 1 • General information

SmartNode 4940 front panel

Figure 3 shows SmartNode 4940 front panel LEDs, the LED definitions are listed in table 4.
rt 0
o P 1
/E
1
1
T
rt
o P 1
/E 1 T
rt 2 o
P
1
/E 1 T
t 3 r o
P 1 /E
1 T
M
u
l t i
­P
o
r t
T
1
/ E
1
/ P
R
I V
o
I P
SmartNode 4940
E
n
te
r p
r i
s
e
V
o
I P
M
e
d
ia
G
a
t e
w
a
y
SN4940/1E30V
Multi-Port T1/E1/PRI VoIP Enterprise VoIP Media Gateway
Power
SmartNode 4940
Activity
VoIP
Ethernet 0/0
Link
Ethernet 0/0
100
T1/E1 Port 0
Ethernet 0/0
1000
Ethernet 0/0
Activity
T1/E1 Port 1
T1/E1 Port 2
T1/E1 Port 3
T1/E1 Port 0
T1/E1 Port 0
T1/E1 Port 3
T1/E1 Port 1 T1/E1 Port 2
Figure 3. SmartNode 4940 front panel
SN4940/4E120V
Multi-Port T1/E1/PRI VoIP Enterprise VoIP Media Gateway
SmartNode 4940
SmartNode 4940 front panel 18
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