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Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note
OL-3008-01
Chapter 5 Configuring the Voice Interfaces
Configuring T1-CAS Analog Emulation (H.323)
For example, the following command configures the first DS-0 group with one timeslot using FXS
emulation in loop-start mode:
gateway(config-controller)# dso-group 0 timeslots 1 type fxs-loop-start
As mentioned earlier, you can configure DS-0 hunt groups by assigning a range of timeslots to a DS-0
group, and then configuring multiple voice peers with the same destination pattern pointing to multiple
voice ports.
For example, the following command assigns 12 timeslots to DS-0 group 1:
gateway(config-controller)# dso-group 1 timeslots 1-12 type fxs-loop-start
Note After completing these steps, configure the route pattern and dial plan and save your
configuration, as described in “H.323 Gateway Configuration” section on page 5-12.
Managing Input Gain for Cisco IP Voice Applications
When using the FXO ports on a AGM, set the input gain to greater than 10 to achieve adequate audio
quality for Cisco IP voice applications or the Cisco IP Phone 7960. Enter the following series of
commands from the Cisco IOS command line to set the correct value for input gain:
gateway# configure terminal
gateway(config)# voice-port <x/x/x> input gain <value>
Permitted entries for <value> are from -6 to 14. Gain values higher than 12 may cause dual tone
multifrequency (DTMF) recognition difficulties.
Table 5-2 T-1 Emulation Types
Emulation Type Function
fxs-loop-start Uses FXS emulation in loop-start mode.
fxs-ground-start Uses FXS emulation in ground-start mode.
fxo-loop-start Uses FXO emulation in loop-start mode.
fxo-ground-start Uses FXO emulation in ground-start mode.
e&m-immediate-start Uses E&M emulation in immediate-start mode.
e&m-wink-start Uses E&M emulation in wink-start mode.
e&m-delay-dial Uses E&M emulation in immediate-delay dial
mode.
- 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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