Specifications

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Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
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Chapter 3 Configuring with the Command-Line Interface
Configuring the Digital Modem Network Module for the Cisco 3640 Router
Configure the E1/T1 Network Module for ISDN PRI
The first step in configuring a digital modem interface is to configure ISDN PRI on either a channelized
T1 or E1 controller, depending on the ISDN service in your area. The ISDN PRI network modules can
have either one or two ports; if the ISDN PRI module installed in your device has two ports, you need
to apply the following procedure to both ports.
Configure Channelized E1 ISDN PRI
To configure ISDN PRI on a channelized E1 controller, perform the following tasks, beginning in global
configuration mode:
Note The values used in this procedure for the framing and linecode commands are examples only. Use
the framing type and line encoding specified by your E1 service provider.
For more information about configuring ISDN PRI on a channelized E1 controller, refer to the
“Configure ISDN PRI” section of the Cisco IOS Release 11.3 Dial Solutions Configuration Guide.
Command Description
isdn switch-type switch type
Select a service provider switch type that
accommodates PRI. Table 3-12 shows a list of
supported switch types.
controller e1 slot/unit
Specify a controller type and define its location in
the Cisco 3640.
framing crc4
Define the framing characteristics as cyclic
redundancy check 4 (CRC4).
linecode hdb3
Define the line code as high-density bipolar 3
(HDB3).
pri-group [timeslots range]
Configure ISDN PRI. This command specifies the
time slots on the T1 line to be allocated to PRI
service.
Table 3-13 ISDN PRI Switch Types
Country ISDN Switch Type
Australia primary-ts01
Europe primary-net5
Japan primary-ntt
North America primary-4ess
primary-5ess
primary-dms100