Cisco Cisco IOS Software Release 12.2(2)XG

To determine the version of Cisco IOS software running on a Cisco 2600 series router, log in to the router 
and enter the show version EXEC command:

router> show version

Cisco Internetwork Operating System Software

IOS (tm) 2600 Software (c2600-i-mz), Version 12.2(2) XG1, RELEASE SOFTWARE

For general information about upgrading to a new software release, refer to Software Installation and 
Upgrade Procedures located at the following URL:

1-port ISDN BRI S/T interface (requires external NT-1)

All Cisco 2600 series platforms

1-port ISDN BRI (NT-1) U

All Cisco 2600 series platforms

1-port 56/64-kbps DSU/CSU

All Cisco 2600 series platforms

1-port T1/fractional T1 with DSU/CSU WAN Interface Card 
(WIC-1DSU-T1)

All Cisco 2600 series platforms

1-port high-speed serial (up to 2.048 Mbps)

All Cisco 2600 series platforms

2-port dual high-speed serial (up to 2.048 Mbps; 
asynchronous/synchronous support)

All Cisco 2600 series platforms

2-port asynchronous/synchronous (up to 128 kbps) 
(WIC-2A/S[=]

All Cisco 2600 series platforms

Data compression AIM (up to 8.192 Mbps)

All Cisco 2600 series platforms

Hardware encryption AIM

All Cisco 2600 series platforms

NM-AIC-64, Contact Closure Network Module

All Cisco 2600 series platforms

1.

The voice/fax and ATM-25 network modules require Cisco IOS Plus feature sets.

2.

The 1- or 2-port 10/100 Ethernet LAN interface for the Cisco 2620 and Cisco 2621 series routers is only available in Cisco IOS Release 12.0 XC and 
later releases. 

3.

Cisco 2650 and 2651 routers require Cisco IOS Release 12.1(3a)T1 or later releases.

4.

See T1/E1 multiflex voice/WAN interface cards in this table.

5.

T1 multiflex voice/WAN interface cards can be used in a chassis slot or installed in a digital T1 packet voice trunk module. E1 multiflex voice/WAN 
interface cards can be installed in a chassis slot.

6.

Uses the VWIC-MFT T1/E1 interface cards.

7.

Requires the NM-1V or NM-2V network module.