OfficeServ 7400
INSTALLATION
TECHNICAL MANUAL
PART 6 MAY 2010
6.2
6.2 CONNECTING C.O. LINES
6.2.1 Connecting Analog Loop Start Lines
Use a twisted pair (AWG #24 (or AWG #26) wire or cord to connect an analog loop start C.O.
line to pins 4 & 5 of the RJ45 jack on the 8TRK/8TRK2/16TRK or 4TRM installed in the
OfficeServ 7400 system.
Pin No.
1
2
3
4
5
6
7
8
Function
- - -
C.O.
TIP
C.O.
RING
- - -
Figure 6.1 Tip and Ring Connections to Analog Trunk Cards
6.2.2 Connecting T1/E1/PRI
TEPRI/TEPRIa/TEPRI2 boards can be connected to a T1/E1 C.O. circuit through a RJ-45 port. As
show below, connect a T1/PRI circuit to the T1/E1/PRI port of the OfficeServ 7400 system.
Though the TEPRI board supports E1, it is not used in the USA.
Using a standard, straight through eight conductor data cable or straight through eight
conductor line cord to connect the customer provided Channel Service Unit (CSU) to the
TEPRI/TEPRIa/TEPRI2 card as shown in
NOTES:
1. It may be necessary to cut off the CSU end of the cable and attach a different connector to
match that of the CSU. If possible, this connection should be soldered because good
connections are critical.
2. It is recommended that the CSU be connected to the network interface with a cable
supplied by the CSU manufacturer. If this is not possible or practical, a custom cable has to
be made up. This cable should be made from 22 gauge two pair cable with each pair
individually shielded. It is recommended that the connections on this cable be soldered
wherever possible to ensure good connections. The shielding of the cable should be
connected to ground at the CSU end only to prevent a ground loop.
P1~P8 Port
(RJ-45)
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