Cables, Connectors, and Pin Assignments

E-15

9161-A2-GH30-30 April 1998
Extension Cables

Extension cables can be ordered for use with the 50-pin FXO, FXS and E&M

Voice APM connectors. They are all straight-through cables (i.e., Pin 1 on the

voice APM side is Pin 1 on the M66 block side of the cable), and they coincide

with the pins on the 50-pin APM connector.

The following table identifies these cables, indicates the voice APM it is used

with, and describes when you might use each:

Extension Cables

Extension Cable Length Voice APM When Used

1 Amphenol plug-to-
1 Amphenol plug
cable
(Twisted pair/25-pair:
1-26, 2-27, 3-28 . . .
25-50)
3E&M
FXO
FXS
To connect the voice APM’s 50-pin
Amphenol connector to the M66 block.
When the M66 block is further than five
feet from the APM connector, used as an
extension to the 5-foot cable normally
used.
See
FXO/FXS Voice APM Connector
on
Page E-12 or
E&M Voice APM
Connector
on Page E-13 for pin
assignments.
1 Amphenol socket-
to-1 Amphenol plug
cable
(Twisted pair/25-pair:
1-26, 2-27, 2-28 . . .
25-50)
25E&M
FXO
FXS
When the M66 block is further than five
feet from the APM’s connector, used as
an extension to the 5-foot1 Amphenol
plug-to-1 Amphenol plug cable.
See
FXO/FXS Voice APM Connector
on
Page E-12 or
E&M Voice APM
Connector
on Page E-13 for pin
assignments.
3 Amphenol plugs-to-
1 Amphenol plug
connector assembly
(Twisted pair: T1-R1
. . .T24-R24, S1-S2)
6FXO
FXS To condense three voice APMs onto the
single M66 block connector.
Extend the cable using the 25-foot
1 Amphenol socket-to-1 Amphenol
plug 25-pair cable.
See
3 Amphenol Plugs-to-1 Amphenol
Plug Cable
on Page E-17 for pin
assignments.
3 Amphenol plugs-to-
4 Amphenol plugs
connector assembly
(Twisted pair: T1-R1
. . .T24-R24,
TR1-RR1 . . .
TR24-RR24,
M1-E1 . . . M24-E24,
SG1-SG1 . . .
SG3-SG3)
6E&M To consolidate signals from three voice
APMs and segregate four applications
onto four M66 blocks (e.g., all transmit
signals on one block, all receive signals
on a second block, all E&M signals on a
third, and all battery and signal ground
signals on the fourth).
Extend the cable using the 25-foot
1 Amphenol socket-to-1 Amphenol
plug 25-pair cable.
See
3 Amphenol Plugs-to-4 Amphenol
Plugs Cable
starting on Page E-19 for
pin assignments.