Cisco Systems 545 User Manual

Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Release 5.5

January 2008

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Text Part Number: OL-14912-01

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Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Release 5.5

© 2008 Cisco Systems, Inc. All rights reserved.

CONTENTS

CHAPTER

1 Functionality 1-1

About Cisco Unified Videoconferencing 3545 Gateway Products 1-1

About the Cisco Unified Videoconferencing 3545 PRI Gateway 1-1
About the Cisco Unified Videoconferencing 3545 Serial Gateway 1-1

About Gateway Features 1-2

About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies 1-6

About Multimedia Conferencing 1-7
About Point-to-Point Conferencing 1-8
About Multipoint Conferencing 1-8
About Gateway IP Network Connections 1-9
About Gateway ISDN Network Connections 1-9
About Gateway Encryption 1-11
About Conferencing via Leased Lines 1-12
About IP-to-Legacy MCU Conferencing 1-12

About Cisco Unified Videoconferencing 3545 Gateway Functionality 1-13

About PRI Gateway Call Handling Capacity 1-13
About Gateway Call Bandwidth Overhead 1-13
Resource Allocation across E1/T1 Lines 1-14
About Peer-to-Peer Connectivity 1-14

CHAPTER

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2 Installing the Cisco Unified Videoconferencing 3545 Gateway 2-1

Physical Description 2-1

Gateway Module 2-1
Cisco Unified Videoconferencing 3545 PRI Gateway RTM 2-2
Cisco Unified Videoconferencing 3545 Serial Gateway RTM 2-3

Preparing for Installation 2-3

Verifying the Package Contents 2-4

Mounting the Cisco Unified Videoconferencing 3545 Chassis in a 19-inch Rack 2-5

Installing the Gateway 2-6

Installing the RTM Module 2-7
Installing the Gateway Module 2-8
Removing a Module 2-9

Initial Gateway Configuration 2-10

Connecting to a PC 2-10

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Contents

Setting the IP Address 2-11
Changing the Configuration Tool Login Password 2-12
Upgrading Gateway Software 2-13

Connecting the Gateway to the Network 2-14

Connecting PRI Lines to the Gateway 2-14

Connecting Serial Lines to the Gateway 2-14

Serial Gateway Cable Connections and Pin-outs 2-15

Physical Description of DTE Cables 2-15
Physical Description of DCE Cables 2-19
Data Interface Cable Pin-out Configurations 2-21
Data Interface Pin Layouts 2-22
DB-25 Connector 2-24
Signaling Interface Cable Pin-out Configuration 2-25
Signaling Interface Pin Layout 2-26

CHAPTER

CHAPTER

Connecting the Gateway to a Power Source 2-27

Accessing the Gateway Administrator Interface 2-27

Registering the Online Help 2-28

Netscape Navigator Users 2-28

3 Using the Cisco Software Upgrade Utility 3-1

Introduction 3-1

Launching the Cisco Software Upgrade Utility 3-1

Upgrading Software 3-2

4 Cable Connections and Pin-outs 4-1

Unit RS-232 9-Pin Serial Port 4-1

9-Pin Serial Port Terminal Cable 4-2

RJ-45 8-Pin IP Network Port 4-2

Circuit Switch Network Port 4-3

ISDN Port 4-3

CHAPTER

CHAPTER

iv

5 Technical Specifications 5-1

Technical Specifications Table 5-1

6 Safety 6-1

Electrical Safety 6-1

Grounding 6-1

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High Voltage 6-2
Power Supply 6-2

ESD Procedures 6-2

Sicherheit 6-3

Elektrische Sicherheit 6-3

Erdung 6-3
Hochspannung 6-3
Netzteil 6-3

ESD-Verfahren 6-4

Warnhinweise 6-4

Seguridad 6-5

Seguridad Electrica 6-5

Tierra 6-5
Alto Voltage 6-5
Abastecimiento de Electricidad 6-5

Contents

CHAPTER

I

NDEX

Procedimientos ESD 6-6

Securite 6-7

Securite Electrique 6-7

Mise a la Terre 6-7
Haute Tension 6-8
Alimentation Electrique 6-8

Prevention des Decharges Electrostatiques 6-8

7 Compliance and Certifications 7-1

Safety Compliance 7-1

EMC 7-2

FCC Part 15 Notice 7-2

Telecom 7-2

ACTA Customer Information 7-3
Canadian Department of Communications Notice 7-3

Environmental Compliance 7-4

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Contents

vi

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CHAP T ER

1

Functionality

This section describes the following topics:

• About Cisco Unified Videoconferencing 3545 Gateway Products, page 1-1

• About Gateway Features, page 1-2

• About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies, page 1-6

• About Cisco Unified Videoconferencing 3545 Gateway Functionality, page 1-13

About Cisco Unified Videoconferencing 3545 Gateway Products

Cisco Unified Videoconferencing 3545 Gateway series consists of the following products:

• Cisco Unified Videoconferencing 3545 PRI Gateway (see the “About the Cisco Unified

Videoconferencing 3545 PRI Gateway”)

• Cisco Unified Videoconferencing 3545 Serial Gateway (see the “About the Cisco Unified

Videoconferencing 3545 Serial Gateway”)

About the Cisco Unified Videoconferencing 3545 PRI Gateway

The Cisco Unified Videoconferencing 3545 PRI Gateway enables audio, video, and data communication
between H.320 endpoints that connect through ISDN, and H.323 endpoints that connect through a
packet-based network. For voice-over-IP, the gateway enables PSTN voice callers to connect from the
ISDN network to IP voice callers. The

ATEWAY supports two PRI ISDN ports.

G

CISCO UNIFIED VIDEOCONFERENCING 3545 PRI

About the Cisco Unified Videoconferencing 3545 Serial Gateway

The Cisco Unified Videoconferencing 3545 Serial Gateway supports multimedia conferencing over IP
by translating between H.323 and serial protocols. With the help of a V.35 Adtran Imux, the gateway can
also translate between H.323 and H.320 protocols.

The gateway offers a serial leg for multimedia conferencing over IP by providing an interface for legacy
endpoints with serial interfaces, encryption/decryption devices, satellite networks and leased line
services.

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About Gateway Features

About Gateway Features

Table 1-1 lists the major features of the Cisco Unified Videoconferencing 3545 Gateway.

Table 1-1 Gateway Feature Summary

Feature Description

Interoperability The gateway provides a high degree of interoperability with other H.323

Web-based
management

SNMP management The gateway features Simple Network Management Protocol (SNMP)

Diagnostics The gateway features front and rear panel LED indicators that display

Network load
balancing

T.120 data
collaboration

Quality of service
(QoS)

Dial plan The gateway supports a simplified dial plan for outbound dialing using a

Direct dialing and call
routing

Chapter 1 Functionality

compliant gateways, gatekeepers, terminals, proxy, and Multipoint
Control Unit (MCU) products by being based on the H.320 standard and
H.323 protocol stack.

The gateway features the gateway interface. This is a web interface used
to configure and monitor the gateway. You can view and modify all
aspects of the gateway configuration from a remote location using a
Java-enabled web browser.

management that supports all aspects of monitoring, diagnostics,
configuration, and trapping.

status for the unit. You can also access remote diagnostics of the unit
through the gateway interface, Telnet, SNMP, or a serial port.

The gateway supports load balancing on the network by communicating
with a gatekeeper through H.323 RAI (Resource Available
Indication)/RAC (Resource Available Confirmation) messages.

The gateway supports data transfers in calls between ISDN and IP by
using high speed T.120 in HMLP and VarMLP formats.

The gateway features configurable coding of media packets to achieve
QoS routing priority on the Internet Protocol (IP) network. The Type of
Service (ToS) bits of the IP datagram header can be configured for priority
level.

single universal prefix. Using the dial plan, the gateway automatically
detects the capabilities received in the Setup message from the IP endpoint
and sets the same bit rate for the ISDN (or serial interface) side of the call.

The gateway dial plan supports the following direct dialing and call
routing facilities:

• Direct Inward Dialing (DID)

• Multiple Subscriber Network (MSN)

1-2

• Q.931 Sub-addressing Information Element

Cisco Unified Videoconferencing 3545 Serial Gateway supports DID in
DCE mode only.

• Internal and External Interactive Voice Response (IVR)

• TCS4

• Default extension

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Chapter 1 Functionality

About Gateway Features

Table 1-1 Gateway Feature Summary (continued)

Feature Description

Access control The gateway features password-controlled access to the gateway interface.

Up to ten different administrator access profiles can be defined for the
gateway.

DTMF translation The gateway supports translation between in-band Dual Tone

Multi-Frequency (DTMF) signals (on the ISDN side) and out-of-band
H.245 messages (on the IP side). DTMF translation occurs for voice and
video calls.

Dual video The gateway supports H.239 standards-based dual video and TANDBERG

DuoVideo technology. Dual video streams enable a screen to carry video
images from one source while simultaneously displaying images from a
second source.

Hot swap The gateway features hot swap functionality that you can use to remove

and replace gateway cards under power.

Conceal caller ID The gateway supports a conceal caller ID feature that instructs the

gatekeeper to conceal the identity of the calling endpoint on the IP or
ISDN network, whether the presentation restricted feature is enabled or
not.

H.323 fast start The gateway H.323 fast start feature enables endpoints to join a voice

conference in the gateway more quickly.

ISDN rollover
(available in Cisco
Unified
Videoconferencing

The gateway features ISDN rollover. In this feature, the gateway sends a
“busy out” channel request to the PSTN switch when the current PRI
connection is left with less than a predefined number of available B

channels. The PSTN switch “rolls over” to the next available gateway.
3545 PRI Gateway
only)

Network Specific
Facility (available in
Cisco Unified
Videoconferencing

The gateway provides support for Network Specific Facility Information

Elements (NSF IEs) which enable system administrators to specify to

service providers the equipment, service, or network through which they

want a call routed.
3545 PRI Gateway
only)

ISDN connection
failure

The gateway responds to ISDN connection failure events, by unregistering

from its gatekeeper. The gatekeeper is forced to send new IP-to-ISDN

calls through a different gateway, thus ensuring high call completion rates.

The gateway re-registers to the gatekeeper when the ISDN connection is

restored.
Downspeeding The gateway features downspeeding functionality. In the downspeeding

feature, the gateway attempts to reconnect a disconnected video call either

at a lower bandwidth or as a voice call. Downspeeding contributes to a

higher percentage of call completion on the network. The gateway

supports downspeeding at call setup and in mid-call.
Multiple trap server

The gateway supports up to three SNMP trap servers.
support

H.239 support The gateway supports the H.239 protocol in ISDN-to-IP calls and in

IP-to-ISDN calls.

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About Gateway Features

Chapter 1 Functionality

Table 1-1 Gateway Feature Summary (continued)

Feature Description

Encryption support The gateway supports H.235-compliant AES 128 encryption for calls over

IP networks, and H.233 and H.234-compliant AES 128 encryption for
calls over ISDN networks.

H.243 Conference
Control support

The gateway supports the H.243 protocol in ISDN-to-IP calls and in
IP-to-ISDN calls. The gateway identifies the protocol version that an IP
endpoint uses and sends H.239 capabilities only to those endpoints
working with protocol version 4.0 or later.

Peer-to-peer
connectivity

The gateway supports connectivity to the IP network through a gatekeeper,
or directly to a peer device such as Cisco Unified Communications
Manager.

IP network
connections

The gateway has one 10/100Base-T Ethernet IP port (on the front panel)
and connects to an IP segment through a direct connection to a network
switch.

Table 1-2 lists features for specific Cisco gateways.

Table 1-2 Cisco Gateway Feature Specifics

Feature Cisco Unified Videoconferencing

3545 PRI Gateway

Cisco Unified Videoconferencing
3545 Serial Gateway

Supported ports 2 PRI ISDN ports 4 serial ports
Supported video

H.320, H.323 (using Cisco Stack v4.0)

conferencing protocols
Supported audio codecs The term audio transcoded video calls refers to the process whereby an

audio stream in a multimedia call can be transcoded from one codec type to
another.

Basic and advanced audio coding supported codecs: G.711, G.722, G.722.1,
G.723.1, G.728

Audio Transcoding G.711 (ISDN) < > G.723.1 (IP) for

up to 60 voice channels.

Transcoding for the 4 supported
multimedia calls.

G.711 (IP) < > G.728 (ISDN) for up
to 20 audio transcoded video
channels.

The gateway automatically performs
A-Law G.711-to-µ-Law G.711
translation between the IP and ISDN
sides if needed.

Note When your Cisco unit

includes both a gateway and
a MCU, G.728 transcoding is
supported on the MCU only.

Supported video

H.261, H.263, H.263+ (Annexes F, J and N), H.263++ (Annex W), H.264

protocols

1-4

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Chapter 1 Functionality

About Gateway Features

Table 1-2 Cisco Gateway Feature Specifics (continued)

Feature Cisco Unified Videoconferencing

3545 PRI Gateway

Supported video

VGA, XGA, SVGA, SIF, 4SIF, CIF, QCIF, 4CIF, 16CIF

resolutions
Supported bandwidths

(Kbps)

56, 64, 112, 128, 168, 192, 224, 256,
280, 320, 336, 384, 448, 512, 672,
768, 1288, 1472, 1680 and 1920

Note Bandwidth rates of 256 Kbps and up support the G.722 audio codec.

Call handling
capabilities

For 1 x PRI T1 line:
23 ports (voice)
23 ports 1B (video and data)
11 ports 2B (video and data)
3 ports 6B (video and data)
For 2 x PRI T1 lines:
46 ports (voice)
30 ports 1B (video and data)
23 ports 2B (video and data)
7 ports 6B (video and data)
For 1 x PRI E1 line:

Cisco Unified Videoconferencing
3545 Serial Gateway

56, 64, 112, 128, 168, 192, 224, 256,
280, 320, 336, 384, 448, 512, 672,
768, 1288, 1472 and 1920

1 call per serial connection, up to a
maximum bandwidth of 1920 Kbps
per port.

30 ports (voice)
30 ports 1B (video and data)
15 ports 2B (video and data)
5 ports 6B (video and data)
For 2 x PRI E1 lines:
60 ports (voice)
30 ports 1B/2B (video and data)
10 ports 6B (video and data)

Line quality Supports line echo cancellation,

H.323 Fast Start and DTMF

Supports line echo cancellation and
DTMF detection for voice calls.

detection for voice and video calls.
IP network connection I10/100Base-T Ethernet IP UTP connection (on the front panel).
Serial control port

(DB-9) connection
Supported media

RS-232 DTE 9-pin D-type connection on front panel for connection to a PC

terminal or an external modem.

N/A V.35, RS-449, EIA-530, EIA-530A
protocols

Supported signaling
protocols

5ESS and 4ESS, DMS100, National

ISDN, Euro-ISDN, VN6 Dialing

RS-366, Manual Control, Data

Triggered.
(France), NTT (Japan), Hong Kong
Dialing (Hong Kong), Support for
Taiwan PRI system.

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About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies

Table 1-2 Cisco Gateway Feature Specifics (continued)

Chapter 1 Functionality

Feature Cisco Unified Videoconferencing

3545 PRI Gateway

Supported media +
signaling combinations

Encryption
interoperability

PRI interface Configurable E1/T1 PRI network

Switch information Numbering Plan Identifier (NPI),

Bonding calls Internal Imux providing calls at 128

Internal IVR capacity 30 simultaneous calls 4 simultaneous calls

N/A RS-449 + RS-366

N/A KIV-7, KG-194

interface.
Support for fractional E1/T1 channel

selection.
Configurable as terminal side (TE) or

network side (NT) device.
Configurable Long Haul PRI module

(supported in Japan only).

Type of Number (TON) and Network
Specific Facility (NSF) information
elements are configurable per PRI
port.

Kbps (2B) up to full PRI of
1472 Kbps (23B) for T1 and up to
full PRI of 1920 Kbps (30B) for E1
using bonding mode 1.

Parallel dialing for bonded calls.

Cisco Unified Videoconferencing
3545 Serial Gateway

V.35 + RS-366
EIA-530 + RS-366
EIA-530A + RS-366

N/A

N/A

N/A

About Cisco Unified Videoconferencing 3545 Gateway
Applications and Topologies

The Cisco Unified Videoconferencing 3545 Gateway supports multimedia conferencing by translating
between H.323 and H.320 protocols. Examples of network applications that use the gateway include:

• Multimedia conferencing (see the “About Multimedia Conferencing” section on page 1-7)

• Point-to-Point conferencing (see the “About Point-to-Point Conferencing” section on page 1-8)

• Multipoint conferencing (see the “About Multipoint Conferencing” section on page 1-8)

• IP networking (see the “About Gateway IP Network Connections” section on page 1-9)

• ISDN networking (see the “About Gateway ISDN Network Connections” section on page 1-9)

• Encrypted videoconferencing (see the “About Gateway Encryption” section on page 1-11)

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Chapter 1 Functionality

157174

H.323

endpoint

H.323

terminal

ISDN
phone

Regular
phone

H.323

endpoint

Cisco

chassis/unit

with serial

gateway

IP network

PSDN

ISDN

• Conferencing over leased lines (see the “About Conferencing via Leased Lines” section on

page 1-12)

• Communicating with legacy MCU equipment (see the “About IP-to-Legacy MCU Conferencing”

section on page 1-12)

About Multimedia Conferencing

The Cisco PRI gateway enables H.323 endpoints on the IP network to communicate with an H.320
terminal, an ISDN phone, or a regular phone on a circuit-switched public network without having to
connect directly to these networks. The gateway allows all IP network terminals to support video
conferences without connecting every desktop computer to an ISDN line (see Figure 1-1).

Figure 1-1 Multimedia Conferencing through the Gateway

About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies

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Typical multimedia conferencing applications include:

• Business video conferencing

• Distance learning

• Telemedicine

• Video-enabled call centers

• Telecommuting

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About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies

157175

H.323

terminal

H.323

terminal

H.323

endpoint

Cisco

chassis/unit

with serial

gateway

IP network

ISDN

About Point-to-Point Conferencing

The Cisco PRI gateway enables direct video, voice, and data communication between an H.320 (ISDN)
terminal and H.323 (IP) terminals at bandwidths of up to 1472 Kbps (23B bonding for T1) and up to
1920 Kbps (30B bonding for E1).

Figure 1-2 Point-to-Point Conferencing through the Gateway

Chapter 1 Functionality

About Multipoint Conferencing

Together with the Cisco MCU, the Cisco PRI gateway enables H.320 ISDN terminals to participate in a
mixed ISDN-IP multipoint multimedia conference with IP network endpoints (see Figure 1-3).

For example, when an H.320 ISDN terminal wants to participate in a multipoint conference with H.323
IP endpoints, the H.320 ISDN terminal can either join the multipoint conference by dialing to the
gateway, or be invited into the conference by one of the participating IP endpoints. In either case, the
gateway connects the ISDN terminal to the Cisco MCU, enabling it to participate in the multipoint
conference.

1-8

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Chapter 1 Functionality

H.323

Terminal

92871

H.323

Terminal

H.323

Terminal

H.323

Terminal

H.323

Terminal

H.320

Terminal

H.320

Terminal

H.320

Terminal

IP phone

IP

network

IP

IP phone

IP

ISDN

Cisco IPVC

Gateway

Cisco IPVC MCU

Cisco IPVC
chassis/unit

About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies

Figure 1-3 Mixed ISDN-IP Multipoint Multimedia Conference

About Gateway IP Network Connections

The Cisco PRI gateway features one 10/100Base-T Ethernet IP port (on the front panel) and connects to
an IP segment through a direct connection to a network switch.

About Gateway ISDN Network Connections

The Cisco PRI gateway features configurable E1/T1 PRI ISDN connections. When configured as an E1

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connection, each port provides 30 B channels and one D signaling channel. When configured as a T1
connection, each port provides 23 B channels and one D signaling channel. The type of line available
depends on your local ISDN provider. You configure the gateway PRI port to an E1 or T1 interface
accordingly. In addition, you can choose to activate only specific channels by using fractional channel
selection.

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About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies

92873

H.323

Terminal

IP phone

IP

IP

network

Public

PRI T1/E1

Central office

switch

Private

Cisco IPVC

Gateway

Cisco IPVC
chassis/unit

157167

IP

H.323 terminal

IP phone

Cisco chassis/unit

Cisco Gateway

IP network

PRI T1/E1

Central Office

switch

PBX

PublicPrivate

157166

IP

H.323 terminal

IP phone

Cisco chassis/unit

Cisco Gateway

IP network

BRI

Central Office

switch

PBX

PublicPrivate

PRI Gateways

You can connect the PRI gateway directly to a PRI line provided by your local ISDN provider (as shown
in Figure 1-4), or to a local private branch exchange (PBX) that provides the PRI connection (as shown
in Figure 1-5).

Figure 1-4 Connecting the PRI Gateway Directly to a Central Office Switch

Chapter 1 Functionality

Figure 1-5 Connecting the PRI Gateway to a PBX that Provides a PRI Line

1-10

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157168

H.323

endpoint

H.323

endpoint

Cisco

chassis/unit

with serial

gateway

IP network

Isolator

RS-366

EIA-530A

RS-366

EIA-530A

DTE

IMUX

DCE

KIV-7

ISDN

157169

H.323

endpoint

H.323

endpoint

Cisco

chassis/unit

with serial

gateway

IP network

KIV-7

Serial

DTE DCE

Satelite

access

About Gateway Encryption

The serial gateway enables encrypted videoconferencing between H.323 endpoints on the IP network
and endpoints on remote sites by connecting to external encryption/decryption devices via serial
interfaces (as shown in Figure 1-6). The serial gateway also enables encrypted videoconferencing via
satellite with or without RS-366 signaling (as shown in Figure 1-7).

Figure 1-6 Encrypted Videoconferencing

About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies

Figure 1-7 Encrypted Videoconferencing via Satellite

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About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies

Leased

line

157170

H.323

endpoint

H.323

endpoint

Cisco

chassis/unit

with serial

gateway

Cisco

chassis/unit

with serial

gateway

IP network

IP network

Adaptor

Adaptor

V35.

DTE DCE

V35.

DCE DTE

157171

H.323

endpoint

H.323

endpoint

Cisco

chassis/unit

with serial

gateway

IP network

IMUX

V35.

Legacy MCU

DTE

V.35

V35.

DCE

V.35

ISDN

About Conferencing via Leased Lines

The serial gateway enables conferencing between H.323 endpoints on IP networks connected via a
leased line (as shown in Figure 1-8).

Figure 1-8 Conferencing via Leased Lines

Chapter 1 Functionality

About IP-to-Legacy MCU Conferencing

The serial gateway provides an IP-to-serial interface for communication with legacy MCU equipment
(as shown in Figure 1-9).

Figure 1-9 IP-to-Serial Interface Communication via Legacy MCU

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Chapter 1 Functionality

About Cisco Unified Videoconferencing 3545 Gateway Functionality

About Cisco Unified Videoconferencing 3545 Gateway
Functionality

This section discusses the following topics:

• About PRI Gateway Call Handling Capacity, page 1-13

• About Gateway Call Bandwidth Overhead, page 1-13

• About Peer-to-Peer Connectivity, page 1-14

About PRI Gateway Call Handling Capacity

Table 1-3 lists the maximum call handling capacity of the PRI gateway for different types of calls.

Table 1-3 PRI Gateway Call Handling Capacity

Call Type Maximum

Number of
Calls Using
1 x E1 PRI
Line

voice (64 Kbps)30236046
2B video (128 Kbps) 15 11 30 23
6B video (384 Kbps) 5 3 10 7
12B video (768 Kbps) 2 1 5 3

Note Enabling ISDN-to-IP DTMF detection in the PRI gateway for video calls reduces the number of

supported calls by half.

Maximum
Number of
Calls Using
1 X T1 PRI
Line

About Gateway Call Bandwidth Overhead

According to the H.320 standard, the available bandwidth allocated to a call at any given bit rate will
always be slightly less than the stated maximum for the following reasons:

• All stated maximum call bandwidths include provision for control, audio, video, and data traffic.

• Video traffic on the ISDN side contains additional bits for error correction purposes which also

consume bandwidth. Video traffic on the IP side does not include this additional load.

• Opening an audio channel further reduces the bandwidth available to the video traffic.

For example, a call at 384 Kbps actually has only 363 Kbps available to it. Control and error correction
account for the remaining 21 Kbps.

Maximum
Number of
Calls Using
2 x E1 PRI
Lines

Maximum
Number of
Calls Using
2 x T1 PRI
Lines

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About Cisco Unified Videoconferencing 3545 Gateway Functionality

Resource Allocation across E1/T1 Lines

The gateway can allocate bandwidth resources to calls across separate E1 or T1 connections to maximize
bandwidth capacity in cases where there is not enough capacity for a call on a single E1 or T1
connection, but where sufficient capacity does exist when remaining capacity on both E1/T1 lines is
combined.

For example, a gateway using two T1 lines can support three 6B calls on each T1 line, with 320 Kbps
spare capacity per line:

• Each T1 line provides 23 B channels.

• Each B channel supports 64 Kbps

• Each T1 line supports 23 x 64 = 1472 Kbps

• Each 6B call requires 6 x 64 = 384 Kbps

• Each T1 line supports 1472/384 = 3 6B calls + 320 Kbps spare

The gateway processes an additional 6B call requiring a further 384 Kbps by taking bandwidth resources
from each of the two T1 lines, both of which have 320 Kbps available. In this way, the gateway spreads
the call over both T1 lines.

Chapter 1 Functionality

About Peer-to-Peer Connectivity

The gateway supports the following types of connectivity to the IP network

• Through a gatekeeper

• Directly to a peer device such as Cisco Unified Communications Manager without the need for a

gatekeeper.

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CHAP T ER

2

Installing the Cisco Unified Videoconferencing 3545 Gateway

This section describes the following topics:

• Physical Description, page 2-1

• Preparing for Installation, page 2-3

• Verifying the Package Contents, page 2-4

• Mounting the Cisco Unified Videoconferencing 3545 Chassis in a 19-inch Rack, page 2-5

• Installing the Gateway, page 2-6

• Initial Gateway Configuration, page 2-10

• Connecting the Gateway to the Network, page 2-14

• Connecting PRI Lines to the Gateway, page 2-14

• Connecting Serial Lines to the Gateway, page 2-14

• Serial Gateway Cable Connections and Pin-outs, page 2-15

• Connecting the Gateway to a Power Source, page 2-27

• Accessing the Gateway Administrator Interface, page 2-27

• Registering the Online Help, page 2-28

Physical Description

This section provides a physical description of the gateway modules and their corresponding RTMs.

Gateway Module

The gateway module has a 10/100BaseT Ethernet port on the front panel that uses an RJ-45 connector
to connect to the network. There is an asynchronous, 9-pin serial port that you can use with a
hyperterminal program to configure and monitor the module.

Figure 2-1 shows the front panel components of the gateway module. Table 2-1 describes these

components.

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2-1

Physical Description

157269

10/100Base T-1

SERIAL

RST

ACTALARM

CDGK Reg

SWAP

RDY

157272

PORT-1PORT-2

ACT

D-Ch

ALARM

ACT

D-Ch

ALARM

Chapter 2 Installing the Cisco Unified Videoconferencing 3545 Gateway

Figure 2-1 Gateway Front Panel

Table 2-1 Front Panel Components

Component Description

10/100 Base T-1
connector

An RJ-45 connector that provides the primary Ethernet connection for the IP
network port.

SERIAL connector A DB-9 connector that allows you to connect a PC terminal for local

configuration.
RST button Allows you to reset the gateway manually.
GK Reg LED Lights green when the gateway is registered with a gatekeeper.
CD LED Lights green when at least one gateway port connection is online.
ACT LED Lights green to indicate that there are active calls in the gateway.
ALARM LED Lights green to indicate that an error has occurred and the gateway requires

resetting.
10/100 Base T-1 LEDs The top part of the 10/100 Base T-1 connector contains two LED indicators.

The left-hand LED lights green when the local IP network link is active. The

right-hand LED lights green if the connection speed is 100 Mbps, and is off

when the connection speed is 10 Mbps.
SWAP RDY LED Hot Swap indication. Lights blue when the latches of a board are unlocked

and it is safe to remove the board from the chassis. Goes off when the board

is completely detached.

Cisco Unified Videoconferencing 3545 PRI Gateway RTM

The Rear Transition Module (RTM) provides the PRI line connections for the Cisco Unified
Videoconferencing 3545 PRI Gateway.

Figure 2-2 shows the RTM panel components of the Cisco Unified Videoconferencing 3545

PRI Gateway module. Tab le 2-2 describes these components.

Figure 2-2 PRI Gateway: Rear Transition Module

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Table 2-2 PRI Gateway Rear Transition Module Components

Component Description

ACT LEDs Lights green to indicate that there are active calls in the gateway.
D-Ch LEDs Lights green to indicate that the PRI line is enabled and a carrier signal is

detected.

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PORT-4

ALARM

ACT

43

PORT-3 PORT-2

ALARM

ACT

21

PORT-1

Table 2-2 PRI Gateway Rear Transition Module Components (continued)

Component Description

ALARM LEDs Displays alarm events for the PRI line.

• YELLOW —Lights yellow when there is a loss of frame alignment at the

remote side.

• ORANGE—Lights orange when there is a loss of frame alignment in the

gateway.

PRI LINE connectors RJ-45 connectors that provide the PRI line connections for the specified

gateway ISDN PRI port.

Cisco Unified Videoconferencing 3545 Serial Gateway RTM

The Rear Transition Module (RTM) provides the serial line connections for the Cisco Unified
Videoconferencing 3545 Serial Gateway.

Figure 2-3 shows the RTM panel components of the Cisco Unified Videoconferencing 3545

Serial Gateway module. Tab le 2-3 describes these components.

Preparing for Installation

Figure 2-3 Serial Gateway: Rear Transition Module

Table 2-3 Serial Rear Transition Module Components

Component Description

PORT connectors DB-60 connectors that provide the serial line connections for gateway serial

ACT and ALARM
LEDs

Preparing for Installation

This section describes the requirements for installing the Cisco Unified Videoconferencing 3545
PRI Gateway and the Cisco Unified Videoconferencing 3545 Serial Gateway in a Cisco Unified
Videoconferencing 3545 chassis. For more information, see the Platform Guide for Cisco IPVC 3644
Chassis. The requirements are as follows:

ports 1 to 4.
ACT lights green to indicate that the specified serial line is currently in use.
ALARM lights red to indicate an internal error related to the specified line.

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Warning

During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly
touch the backplane with your hand or any metal tool, or you could shock yourself.

• Cisco Unified Videoconferencing 3545 chassis

• Proper clearance at the sides of the unit to allow adequate ventilation, and at least 20 cm clearance

at the back of the chassis to allow access to the boards and cable connections

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