Cisco MC3810 Series Quick Start Manual page 12

Install Chassis and Connect Cables (continued)
T1
RJ-48-to-RJ-48 rollover cable
or two 75-ohm coaxial
cables with BNC connectors
10
Connecting the T1/E1 Digital
Voice Port
If your Cisco MC3810 has a T1/E1 digital voice
port, connect it to a digital PBX.
If the digital voice port has an RJ-48 jack, use an
RJ-48-to-RJ-48 rollover cable (not included), or a
special cable if required for your application.
If the digital voice port has BNC connectors, use two
75-ohm coaxial cables with BNC connectors (not
included).
Note: For an RJ-48 connection to most PBXs, a
rollover cable is required. However, some PBXs may
have a connector pinout for a straight-through cable.
T1/E1
T1/E1
Digital voice port
(RJ-48 shown)
(not shown)
Cisco MC3810
PBX
Step 1
Note: Be sure to make the correct transmit and
receive connections for both 75-ohm cables.
Step 2
For an RJ-48 cable—Connect one end of
the cable to the RJ-48 jack labeled T1/E1
on a tan background.
For coaxial cables—Connect one end of
the cables to the BNC connectors labeled
E1 on a tan background.
Connect the other end of the cable(s) to
the digital PBX.