Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 119

Connecting ISDN BRI Network Modules
This chapter describes how to connect Integrated Services Digital Network (ISDN) Basic Rate Interface
(BRI) network modules for Cisco modular routers and contains the following sections:
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Unless specifically identified, references to BRI modules in this chapter include all ISDN BRI network
modules.
Do not install an ISDN BRI network module in the same chassis as an ISDN Primary Rate Interface
Note
(PRI) network module unless you are using Cisco IOS Release 11.3(3)T or later. Earlier Cisco IOS
releases do not support this configuration.
To determine whether your router supports a specific network module, see
Tip
4- and 8-Port ISDN BRI S/T Network Modules
This section provides information about the following network modules for Cisco modular routers:
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OL-2485-20
4- and 8-Port ISDN BRI S/T Network Modules, page 6-1
4- and 8-Port ISDN BRI U Network Modules, page 6-3
Upgrading ISDN BRI Network Modules, page 6-6
4-port ISDN BRI network module (NM-4B-S/T or CPANM-4B-S/T) (see
connects to an ISDN WAN through an external Network Termination 1 (NT1) device (also known
as an S/T interface). It is also referred to as the 4-port BRI S/T network module.
8-port ISDN BRI network module (NM-8B-S/T or CPANM-8B-S/T) (see
connects to an ISDN WAN through an external NT1 device (also known as an S/T interface). It is
also referred to as the 8-port BRI S/T network module.
C H A P T E R
Cisco Network Modules Hardware Installation Guide
6
Table 1-6 on page 1-16.
Figure 6-1). This module
Figure 6-2). This module
6-1