
9
Install Chassis and Connect Cables (continued)
Telephone
PBX
FXS port FXO port
E&M port
Cisco MC3810
2
3
5
6
1
4
RJ-11 jack
to central office
T1/E1
ConnectingAnalogVoice Ports
Connect analog voice ports as follows:
• FXS port—(gray) to telephone or fax equipment
• FXO port—(pink) to central office (CO) line
• E&M port—(brown) to analog PBX
Use an RJ-11-to-RJ-11 standard telephone cable
(not included) for each FXO or FXS port.
Use 8-conductor, straight-through cables with
modular connectors (not included) for E&M ports.
For 4-wire E&M conforming to ETSI CTR17, use a
CTR17adapter(notincluded) betweenthecableand
the E&M port.
Step 1 Select the appropriate cable. (See
information at left.)
Step 2 Connect one end of the cable to the FXS,
FXO, or E&M port, as required.
Step 3 Connect the other end of the cable to the
matching equipment or line.
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