The analog modem network module, the Cisco NM-16AM-V2, supports basic telephone service connections on Cisco 2600XM series routers, Cisco 3600 series, and Cisco 3700 series.Combined with the differentiated services delivered through Cisco IOS software, users of Cisco 2600XM series, Cisco 3600 series, and Cisco 3700 series routers have best-of-breed scalability, flexibility, and investment protection, all in cost-effective, multifunctional platforms.