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Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note
OL-3008-01
Chapter 1 Overview
Software Features
Software Features
This section describes the AGM software features.
Telephony Call Control
The AGM supports several options for telephony call control:
• Cisco Call Manager (CCM) can be used for centralized call control for numerous VoIP gateways,
including the AGM, at campus and branch sites. The AGM supports both MGCP and H.323v2
interfaces to the CCM.
• SRST is an IOS-based backup for the CCM that resides on the AGM itself. SRST automatically
takes over call control if connectivity to the CCM is lost.
• ITS software can be used for distributed call control.
Voice Gateway Features
The AGM can provide voice gateway support for up to 96 voice channels, or up to 48 channels if
conferencing or transcoding are enabled. The AGM supports the following voice gateway services:
• VoIP encapsulation—10, 20, 30, 40, 50, and 60 msec packet sizes
• Voice Compression—G.711 and G.729a encoding
• Fax Support—Cisco Fax Relay and G.711 Fax Passthrough support
• Modem Support—G.711 Modem Passthrough support
• IP Header Compression—CRTP
• Echo Cancellation—8 to 64 msec echo cancellation support, depending on interface type
• Signaling Types—T1 channel-associated signaling (CAS), ISDN Primary Rate Interface (PRI),
Basic Rate Interface (BRI)
Advanced Voice Services
The AGM supports advanced voice services such as conferencing and transcoding:
• Conferencing—when conferencing is enabled, 4 DSPs are allocated to conferencing. Each DSP
supports 1 conference x 6 parties or 2 conferences x 3 parties. The AGM supports both meet-me and
ad-hoc conference modes.
• Transcoding—when transcoding is enabled, 8 DSPs are allocated to conferencing. Each DSP
transcodes 2 full duplex voice channels between G.711 and G.729a.
Routing Services
The AGM supports the following Cisco IOS routing services:
• Routing Protocols—IP (v4), IPv6, IPX, SNA
• Routing algorithms—OSPF, BGP, and more
- Cisco Catalyst 4000 1
- Access Gateway Module 1
- CONTENTS 3
- Contents 4
- Audience 9
- Organization 9
- Conventions 10
- Safety Overview 11
- Related Documentation 12
- Obtaining Documentation 13
- Documentation Feedback 14
- Cisco.com 14
- Technical Assistance Center 15
- Overview 17
- IP Telephony Campus 18
- Large Branch Office 18
- • the console port on the AGM 19
- Hardware Features 20
- Cisco Catalyst 4000 DSP Set 21
- Data Interface Modules 21
- Voice Interface Modules 22
- Signaling Support on AGM 23
- Switch-Type Support on AGM 23
- Software Features 24
- Security 25
- Resiliency 25
- Network Management Support 26
- Preparing to Install the AGM 27
- Installing the AGM 29
- Hot-Swapping Features 31
- Checking the AGM Operation 32
- Power Supply 1 34
- Power Supply 2 34
- WAN Interface Modules 35
- SEE MANUAL 36
- INSTALLATION 36
- Straight-through 41
- RJ-11-to-RJ-11 cable 41
- RJ-11 ports 41
- RJ-11 wall jack 41
- RJ-21 Connectors 42
- Velcro strap 43
- ConfigurableNot used 45
- RJ-48S ports 47
- RJ-48S wall jack 47
- RJ-48C ports 48
- NT1 device 48
- RJ-45-to-RJ-45 cable 48
- S/T port 48
- RJ-48C-to-RJ-48C cable 50
- RJ-48C wall jack 50
- Booting the AGM 53
- Accessing the AGM 54
- Configuring the Console Port 55
- Connecting a Terminal 56
- Connecting a Modem 56
- Using the Cisco IOS CLI 57
- Getting Help 58
- Command Modes 58
- Gateway(config-if)# 59
- (config 59
- Gateway(config-dial-peer)# 59
- Saving Configuration Changes 60
- Table 4-2 ISDN Switch Types 68
- Configuring T1 Interfaces 69
- Configuring E1 Interfaces 71
- Preparing to Configure VoIP 75
- Configuring Voice Interfaces 76
- MGCP Configuration 77
- Enabling MGCP 78
- • E&M Wink Start 81
- • E&M Delay Start 81
- H.323 Gateway Configuration 86
- FXS Emulation Example 90
- FXO Emulation Example 90
- E&M Emulation Example 91
- Configuring ISDN BRI Lines 92
- Gateway 1 Configuration 95
- T1/E1 Configuration (H.323) 96
- T1/PRI Configuration Example 97
- E1/PRI Configuration Example 98
- Configuration for AGM AGLB-1 99
- Configuration for AGM AGLB-2 100
- FXO Connection to PSTN 101
- San Jose Salt Lake City 102
- AGM SLC Configuration 103
- OL-3008-01 104
- Configuring FXS Voice Ports 106
- Validating the Configuration 107
- Fine-Tuning FXS Voice Ports 108
- Activating the Voice Port 110
- Sample Configuration 110
- Verifying the Configuration 120
- Sample Configurations 121
- Configuration File for Peer 1 124
- Configuration File for Peer 2 126
- Configuring the DSP Farm 129
- IP Telephony Gateway Mode 130
- Conferencing Service 131
- Transcoding Service 132
- Troubleshooting the AGM 137
- Troubleshooting Controller 138
- Troubleshooting Hardware 141
- Troubleshooting TDM 141
- Troubleshooting DSP 142
- SIMM 3 DSP 12–17 143
- SIMM 4 DSP 18–23 143
- Entering ROM Monitor Mode 145
- Configuring for Autoboot 146
- ROM Monitor Commands 147
- Debugging Commands 150
- Cookie Commands 151
- Upgrading the ROM Monitor 157
- Using Loss Plan Defaults 159
- Transmission Loss Plan 160
- Console Connector Pinouts 161
- Management Port Pinouts 161
- Identifying a Rollover Cable 163
- Connecting to a PC 164
- Connecting to a Terminal 164
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