Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 141

Chapter 7 Connecting ISDN PRI Network Modules
Online Insertion and Removal with a Cisco PRI Network Module
(Cisco 3660 and Cisco 3745 Only)
Some Cisco modular access routers allow you to replace network modules without switching off the
router or affecting the operation of other interfaces. This feature is called online insertion and removal
(OIR). OIR of network modules provides uninterrupted operation to network users, maintains routing
information, and ensures session preservation.
All Cisco PRI network modules have OIR support, but OIR is supported only on Cisco 3660 and
Note
Cisco 3745 platforms.
Cisco routers support OIR with similar modules only. If you remove a network module, install
Caution
another module exactly like it in its place. If you remove a network module with an installed interface
card, expansion module, or AIM, the replacement module should have the same hardware installed.
For a description of informational and error messages that may appear on the console during this
procedure, refer to the hardware installation guide for your type of router.
Upgrading ISDN PRI Network Modules
If your Cisco 3600 series router contains a legacy ISDN PRI network module and a digital modem
network module (product numbers NM-6DM, NM-12DM, NM-18DM, NM-24DM, or NM-30DM), your
ISDN PRI network module may need to be upgraded to revision level -03 or higher. Earlier revisions of
ISDN PRI network modules cannot send modem calls to the digital modem network module.
Channelized T1/E1 PRI network modules with G.703 provide full support for Cisco digital modem
Note
network modules.
If your PRI module is the wrong revision, you see a message similar to the following message when the
router boots:
The PRI 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 the revision level.
The output of the show diag command looks similar to the following:
Port adapter is analyzed
Port adapter insertion time unknown
Hardware revision 1.0
Serial number
Test history
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
OL-2485-20
Online Insertion and Removal with a Cisco PRI Network Module (Cisco 3660 and Cisco 3745 Only)
Board revision A0
4152626 Part number
0x0 RMA number
800-01236-01
00-00-00
Cisco Network Modules Hardware Installation Guide
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