The interface cards provide cost-effective basic telephone service connectivity to allow remote router management, asynchronous dial-on-demand routing (DDR) and dial backup, dial- and fax-out modem access, and low-density remote-access-server (RAS) services. Combined with the differentiated services delivered through Cisco IOS Software, the Cisco routers offer customers best-of-breed scalability, flexibility, and investment protection-all in cost-effective, multifunctional platforms. Modem speed: 56 Operating temperature range (T-T): 0 - 40 Operating relative humidity range: 10 - 85 Type: K56Flex, V.90, V.92 Dimensions (WxDxH): 69 x 99 x 19 Data compression: MNP-5, ITU V.42bis, ITU V.44 Supported protocols: Bell 103, ITU V.21, Bell 212A, ITU V.22, ITU V.22bis, ITU V.29, ITU V.32, ITU V.32bis, ITU V.34, ITU V.17, ITU V.23, ITU V.27ter, ITU V.34bis, ITU V.33
