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This 2-port BRI voice/fax interface card (configurable for either network or terminal side) is used to connect as network side or user side to a PBX or key system as off-premises connections (ISDN voice BRI). The card supports patent-pending flexible Layer 2 and Layer 3 configurations.
Cisco IP Communications voice/fax network modules support either one or two Cisco voice interface cards (VICs) or Cisco voice/WAN interface cards (VWICs) and install into network module slots for the Cisco 2600XM Series, Cisco 2691, and Cisco 3600 and 3700 series voice gateway routers. Cisco VICs are daughter cards that install into the network modules and provide the interface to the PSTN and to telephony equipment (PBX, key systems, fax machines, phones).
VICs include 2-port foreign exchange station (FXS), direct inward dial (DID), foreign exchange office (FXO), and E&M analog interface cards. Also available are 4-port FXS and 4-port FXO cards and a 2-port ISDN Basic Rate Interface (BRI) digital interface card providing --40V phantom power. These cards cover the entire range of analog connectivity options along with user-side and network-side digital BRI connections (Table 1).
Cisco IP Communications voice/fax network modules provide the gateway to Cisco AVVID for calls to and from the PSTN and the traditional telephony equipment. These network modules enable users to operate at any point on the integrated voice, video, and data infrastructure spectrum while incrementally adding connections to both traditional telephony and IP telephony.