Cisco Cisco VN 2900 Network Adaptation Interface インストールガイド
Connecting Voice Interface Cards to the Network
Receive and Transmit (E&M) Interface Cards
8
OL-12847-01
Receive and Transmit (E&M) Interface Cards
RecEive and transMit (E&M) is a signaling technique for two-wire and four-wire telephone and trunk
interfaces. The E&M interface typically connects remote calls from an IP network to a PBX. The cards
are illustrated in
interfaces. The E&M interface typically connects remote calls from an IP network to a PBX. The cards
are illustrated in
Caution
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
connect the 2-port E&M card (VIC2-2E/M) 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.
connect the 2-port E&M card (VIC2-2E/M) 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.
Figure 9
2-Port E&M Card Front Panel (VIC-2E/M)
Figure 10
2-Port E&M Card Front Panel (VIC2-2E/M)
Connecting E&M Interface Cards
Use a straight-through RJ-48C cable to connect the E&M card to the PSTN or PBX through a telephone
wall outlet.
wall outlet.
Caution
Do not connect an E&M interface directly to the PSTN.
Note
Ports on the E&M voice interface card are colored brown.
Step 1
Confirm that the router is still turned off.
Step 2
Connect one end of the straight-through RJ-48C-to-RJ-48C cable to an RJ-48C port on the card. (See
41219
SEE MANUAL BEFORE INSTALLATION
VIC
E&M
IN USE
IN USE
1
0
89039
VIC2-
2E/M
SEE MANUAL BEFORE INSTALLATION
1
IN USE
IN USE
0