AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 107

Hardware Components
DTE LOOPBACK
LOCAL
POWER
Figure 2-12. ESF T1 Channel Service Unit Connections
Universal Paging Access Module or Loop-Start Trunk Adapter
The UPAM and the Loop-Start Trunk Adapter connect paging equipment to a
loop-start or ground-start jack on the control unit. A Loop-Start Trunk Adapter
should be used only with a PagePac paging system; a UPAM should be used
with a customer-provided paging system. A Loop-Start Trunk Adapter must be
used with a PagePac paging system and no Zonemate equipment, An
acknowledgement tone is not provided when an UPAM is used.
The UPAM is ordered as a D-kit, The kit contains a power source, a
microphone matching transformer, and an access module.
Telephone Adapters
The following adapters are used to connect various adjuncts to the telephones.
FRONT PANEL
S E N D C O D E
LOOPED
L O W
DENS
FRAME LOSS
DIAGNOSTIC
INTERFACE
WIRE WRAP CONNECTOR
ALARM
N E A R L O O P E D
BPV
CR C ERROR
FRAME LOSS
PULSES
CRITICAL POWER
FAR END LOOPED
D C
P O W E R
TERMINAL
B L O C K
D C
F U S E
REAR PANEL
Adapters and Adjuncts
A C
P O W E R
CONNECTION
A C
FUSE
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