From: http://www.cisco.com/en/US/partner/products/hw/routers/ps259/prod_bulletin09186a0080108096.html
Customers are encouraged to migrate to the Cisco 2600XM models, which offer the same modular design and flexibility as the Traditional Cisco 2600 routers, but in addition offer more functionality for the same list price! In direct comparison, the Cisco 2600XMs provide more value and functionality by providing the following:
Up to 33% performance increase for processor-intensive services
Increased default memory
Increased maximum flash memory to 48MB
Increased maximum SDRAM memory to 128MB
Integrated 10/100 Fast Ethernet ports on all Cisco 2600XM models
Mainline IOS with the support of 12.1(14) and 12.2(12), in addition to 12.2(8)T1
Same feature and module support as the Traditional Cisco 2600 models
Cisco 2650XM and Cisco 2651XM models supported on a 12.1 mainline (12.1.14)
Enhanced security and broadband 2600XM product bundles for lower solution costs and easier ordering (worldwide announcement made on August 12, 2002)
In addition to increased functionality, the new Cisco 2600XM routers provide the same platform applications and functionality as the current traditional Cisco 2600s:
A DC and RPS version of each model
NEBs Level 3
Same Module support, including Network Modules, WAN Interface Cards (WIC) and Advanced Integration Modules (AIM)
Same chassis dimensions (1RU), power, environmental and regulator specifications
For additional flexibility and higher performance, the Cisco 2691 router can also be considered as a replacement product.
