Cisco 2600 Series Operation Manual page 72

Upgrading ISDN BRI Network Modules
Table 7-1
Module
NM-4B-S/T
NM-4B-U
NM-8B-S/T
NM-8B-U
If the BRI module is the wrong revision, you see a message similar to this one when the
router boots:
The BRI network module in slot 0 is incompatible with the digital modems
installed in the router.
To determine the revision level, you can examine the network module itself (outside the
router), or use the Cisco IOS show diag command. The label on the module board should
show a part number beginning with 800- and ending with -03 or -06. A BRI S/T module
whose part number ends with -01 or -02 needs to be upgraded, as does a BRI U module
whose part number is lower than -06.
The output of the show diag command looks similar to the following:
To order network module upgrades, see the "Cisco Connection Online" section on page xiv.
7-2 Cisco Network Modules Hardware Installation Guide
ISDN BRI Network Module Upgrade Versions
Minimum Version
800-01236-03
800-01238-06
800-01237-03
800-01239-06
Port adapter is analyzed
Port adapter insertion time unknown
Hardware revision 1.0
Serial number 4152626
Test history 0x0
EEPROM format version 1
EEPROM contents (hex):
0x20: 01 26 01 00 00 3F 5D 32 50 04 CC 01 00 00 00 00
0x30: 50 00 00 00 96 11 04 17 FF FF FF FF FF FF FF FF
Board revision A0
Part number 800-01236-01
RMA number 00-00-00