Download Multiserver 3000

Marathon 3K Voice/Fax Facility Manual
Testing
Test Connections
Connections for all switched and forceconnected loopback tests are made by
modular cable at the rear of the 3K Base Module, as shown in Figure 51.
The modular cables for FXO and FXS connections are supplied. The modular
cable for E&M connections is available as an option.
3K
Base Module
RJ11
Optional Modular cable for
E&M. Connect terminal
block associated with the
PBX.
RJ1CX
E&M
RJ1CX Interface
Modular cable for FXS
or FXO. Connect to
telephone set or wall
jack.
FXS/FXO
RJ11 Interface
Pin 1
Pin 1
Pin
Pin
1 2 3 4
SB M R1 R
5
T
6
T1
7 8
E SG
1
2
R
3
T
4
Figure 5-1. Loopback Connections
Loopback Tests, Switching Mode
VOICE/FAX TESTS
1. SELF TEST
2. LOOPBACK
3. INPUT LEVEL DISPLAY
4. RESET VOICE/FAX CHANNEL
5. TERMINATE TEST
When the voice/fax channel is in the switching mode, the loopback test is
single ended. If successful, it verifies that all circuits of the voice/fax channel,
including the telephone interface circuits, are working properly. In the
following examples all extension numbers are fictitious; the actual extension
numbers, if any, are determined by your installation.
When the voice/fax channel is force connected to a remote voice/fax channel,
both ends are in loopback, and the TM indicator should go on at both ends.
5-4