Cisco 1601 Hardware Installation Guide - Page 125
FXS, FXO, and E&M Interface Card LEDs, ISDN BRI Interface Cards
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Voice Interface Cards Figure 89 Connecting the 2-Port E&M Card RJ-48C ports IN USE IN USE VIC E&M 1 SEE MANUAL BEFORE INSTALLATION 0 FXS, FXO, and E&M Interface Card LEDs Straight-through RJ-48C-to-RJ-48C cable 41194 Step 3 RJ-48C wall jack Connect the other end of the cable to an RJ-48C wall outlet. FXS, FXO, and E&M Interface Card LEDs Each voice interface card has IN USE LEDs, one for each port. These LEDs have three states: green when active, off when ready for use, and amber when not ready for use. Figure 90 shows a voice interface card with an E&M interface as an example. Figure 90 Voice Interface Card LEDs IN USE IN USE 41227 VIC E&M 1 SEE MANUAL BEFORE INSTALLATION 0 LED LED ISDN BRI Interface Cards The ISDN BRI S/T voice interface card provides a client-side (TE) ISDN S/T physical interface for connection to an NT1 device terminating an ISDN telephone network. Each port on the interface card can carry two voice calls (one over each ISDN B channel), for a total of four calls per ISDN BRI card. ISDN BRI NT/TE voice interface cards (VIC-2BRI-NT/TE and VIC2-2BRI-NT/TE) have the same capabilities as the S/T card, but can also be configured to provide a network termination (NT) interface with phantom power. OL-12847-01 9