Cisco 1601 Hardware Installation Guide - Page 129

Voice Interface Cards Analog Direct Inward Dial (DID) Interface Cards ISDN BRI Interface Card LEDs ISDN BRI voice interface cards have three LEDs, as listed in Table 26. Table 26 ISDN BRI Voice Interface Card LEDs LED Meaning B1 Call active on B1 channel B2 Call active on B2 channel OK Interface is connected to an ISDN network Analog Direct Inward Dial (DID) Interface Cards A Direct Inward Dial (DID) voice interface provides DID service to extensions on a PBX. Figure 94 shows the VIC-2DID card, and Figure 95 shows the VIC-4FXS/DID card. Caution To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, connect the 4-port FXS/DID card (VIC-4FXS/DID) only to intra-building or non-exposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends. Note Each port on the 4-port FXS/DID VIC can be configured as either Foreign Exchange Station (FXS) or Direct Inward Dial (DID) when it is used with phones with a Ringer Equivalence Number (REN) load of 1 or less. If the REN load on any port is greater than 1, all four ports must be configured as either FXS or DID. For information about using FXS with the 4-port FXS/DID VIC, see the "Foreign Exchange Station (FXS) Interface Cards" section on page 3. Note Cisco 2600XM series, Cisco 2691, Cisco 2800 series, Cisco 3600 series, Cisco 3700 series, and Cisco 3800 series routers support DID on the 4-port FXS/DID cards in Cisco IOS Release 12.3(14)T and later. Figure 94 2-Port Analog DID Voice Interface Card VIC 2DID 1 SEE MANUAL BEFORE INSTALLATION 0 IN USE IN USE 36014 OL-12847-01 13