Primary Rate Interface equipment: overview
Page 17 of 188
ISDN PRI Installation
Figure 3
QPC757 DCHI faceplate layout
Q
P
C
7
5
7
C
J1
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
J2
Status LED
The DCHI LED indicates the status
of both ports on the DCHI card.
If both ports are configured, the LED
is lit only when both ports are disabled.
Asynchronous port
D-channel interface
This port is connected to port J5 on
a PRI card. The D-channel is
always channel 24 on a PRI.
Port J2 is always an odd number
(1, 3, 5 … 15).
This port is used for non-PRI applications.
Port J1 is always an even number
(0, 2, 4, ...14).
553-1373
