Cisco Module 4p ISDN BRI f C2600-3600 NM-4B-S/T= Manuel D’Utilisation

Note: Modem dialup requires the Digital Modem Module (NM−DM) and Cisco IOS Software Release
12.0(2)XC or later. The ISDN BRI network module must also have these hardware revisions (which you can
determine through the show diag command):

NM−4B−S/TFour port ISDN BRI network module, minimum version 800−01236−03

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NM−4B−UFour port ISDN BRI network module with integrated NT−1 network module, minimum
version 800−01238−06

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NM−8B−S/TEight port ISDN BRI network module, minimum version 800−01237−03

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NM−8B−UEight port ISDN BRI network module with integrated NT−1 network module, minimum
version 800−01239−06

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For more information, refer to these field notices:

Field Notice: Cisco 3600 NM−4B−U and NM−8B−U Problems

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Field Notice: Using Digital Modems with the Cisco 3600 Basic Rate Interface (BRI) Network Module
Upgrade

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Updated: Nov 28, 2006

Document ID: 7253

Cisco − Understanding 4− and 8−Port ISDN BRI Network Modules