Compare Cisco (VIC-2FXS=) Voice Interface Card to Cisco (NM-6DM-RF)

With voice/fax network modules, the Cisco multiservice access routers offer unparalleled multifunctional capabilities in a branch office solution, building on Cisco's strengths in LAN-to-LAN routing and dial access.??The voice/fax network modules for the Cisco multiservice access routers enable packet voice technologies including VoIP and VoFR. Cisco's voice solutions provide the means for integrating both voice and data within a single network and allow users to take advantage of services, such as toll-bypass, without sacrificing voice quality. This combination of voice solutions leverages Cisco's proven track record of being able to effectively handle time-sensitive traffic, such as Systems Network Architecture (SNA) over IP networks. Cisco IOS software also incorporates built-in quality-of-service (QoS) features along with standards-based (FRF.11 and FRF.12) encapsulation and fragmentation providing efficient transport of both voice and fax over IP and Frame Relay networks. Thes... Less

The digital modem network modules significantly enhance the dial access flexibility and scalability of the Cisco 3600 series platform. Each network module supports up to 30 digital modems. The digital modem network modules use either the single or dual PRI network modules to offer support for up to 60 remote modem users (using two network modules), at speeds up to 56 Kbps. K56flex modem technology is currently supported, and future standards will be supported as they become available. Less