Connecting Off-Premise Telephones - Nortel Meridian 1 Option 11C Planning And Installation Manual

Connecting off-premise telephones

• Table 43, "Expansion Cabinet 1 Default DN assignments," on
page 264
• Table 44, "Expansion Cabinet 2 Default DN assignments," on
page 265
• Table 45, "Expansion Cabinet 3 Default DN assignments," on
page 267
• Table 46, "Expansion Cabinet 4 Default DN assignments," on
page 268
The telephone can now be activated as described in "Activating
telephones" on page 269.
Off-premise 500/2500-type telephones must be connected through an
NTAK92AA Off-Premise Protection module. Each module can connect up to
four analog telephones and can interface with an NT1R20 Off-Premise
Station analog Line Card, an NT8D03 Analog Line Card or with an NT8D09
Message Waiting Line Card.
The message waiting line card produces -150 volts which is considered
hazardous on off-premise telephones. Make sure that the -150 V is
disabled on off-premise telephones.
The voltage is disabled when the Class Of Service (CLS) assigned to
the telephone is LPD (message waiting lamp denied) and MWD
(Message Waiting Denied) in LD 10.
Refer to Software Input/Output Guide Maintenance (553-3001-511)
for information about LD 10.
Under no circumstances shall LPA or MWA be assigned in the Class of
Service on off-premise telephones.
Connecting the telephones Page 253 of 408
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Option 11C Planning and Installation Guide