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Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note
OL-3008-01
Chapter 4 Configuring the Data Interfaces
Configuring T1 and E1 Interfaces
Step 7
gateway(config-controller)#
linecode b8zs
Specify the line code format. This is an encoding method
used to allow synchronous data to be transmitted in a
compatible format for T1 transmission. Common line
codes are RZ (return to zero), NRZ (non-return to zero),
binary zero 0 substitution (B8ZS), alternate mark
inversion (AMI), and HDB3 (high density bipolar
order 3).
B8ZS is the most popular line-code scheme used in North
America. To maintain clock synchronization, B8ZS
replaces a string of 8 binary 0s with variations. B8ZS is
more reliable than AMI, and it should be used with PRI
configurations.
Step 8
gateway(config-controller)#
channel-group 0 timeslots 1,3-5,7
Specify the channel group and time slots to be mapped.
When configuring a T1 data line, channel-group numbers
can be values from 0 to 23.
Timeslots are assigned to channels. One or more timeslots
or ranges of timeslots belong to the channel group. The
first timeslot is numbered 1. For a T1 controller, the
timeslot range is from 1 to 24. For T1 PRI scenarios, all 24
T1 timeslots are assigned as ISDNPRI channels.
The default line speed when configuring a T1 controller is
56 kbps.
In this example, channel-group 0 consists of 5 timeslots
and runs at a speed of 56 kbps per timeslot.
Step 9
gateway(config-controller)#
interface serial 1/0:0
gateway(config-if)#
Configure each channel group as a virtual serial interface.
Specify the T1 interface (1), unit number (0), and channel
group (0) to modify and enter the interface configuration
mode.
You know you have entered interface configuration mode
when the prompt changes to
gateway(config-if)#.
Step 10
gateway(config-if)# ip address
10.1.15.1 255.255.255.0
Assign an IP address and subnet mask to the interface.
Step 11
gateway(config-if)# exit
Exit back to global configuration mode.
If your AGM has more than one CT1/PRI interface that
you need to configure, repeat Steps 4 through 10.
Step 12
gateway(config)# Ctrl-z
gateway#
When you finish configuring interfaces, return to enable
mode.
Command Purpose (continued)
- 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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