3 – Installation & Wiring
T1 CrossConnect Installation & Operation Manual
Version 2
GatesAir
3-7
Intraplex Products
3.4.1.3 MA-216 to MA-255C Cable Pin Assignments
Table 3-3. Pin Assignments for MA-216 (DB-15) T1 to MA-255C (RJ-45) T1 Cable
MA-216
Cable End
(DB-15)
Description
MA-255C
Cable End
(RJ-45)
1
T1 Transmit (ring)
2
9
T1 Transmit (tip)
1
3
T1 Receive (ring)
4
11
T1 Receive (tip)
5
2
T1 signal ground
7
4
T1 signal ground
Not used
5,6,7,8,10,
12,13,14,15
Not used
Not used
3.4.2
External Timing Connector Wiring (Optional)
The MA-216 module adapter provides an RJ-11 timing input jack and an RJ-11 timing output jack.
Timing Out
is a balanced 1.544 MHz RS-422 output from the corresponding CM-5 that may be used as
an external T1 timing source by other equipment.
Timing In
is a balanced 1.544 MHz RS-422 input to
the corresponding CM-5 that may be connected to an external T1 timing source. The CM-5
synchronizes to this source only if timing is set to
External
.
These jacks may also be used to “daisy-chain” several multiplexers together to synchronize them all to
the same clock. The
T1 Access Server Installation & Operation Manual
gives more information.
3.4.2.1 MA-216 External Timing Connectors
Table 3-4. MA-216 Port Pin Assignments for External Timing In (RJ-11)
Connector
Pin
Description
1
External timing input, positive (+)
2
External timing input, negative (-)
3
Not used
4
5
VRM timing input, positive (+)
6
VRM timing input, negative (-)
Table 3-5. MA-216 Port Pin Assignments for External Timing Out (RJ-11)
Connector
Pin
Description
1
Timing output positive (+)
2
Timing output negative (-)
3
Signal ground
4
5
Not used
6
Summary of Contents for Intraplex T1 DCS-9500 CrossConnect System
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