Nortel Networks 1000 - Manual (Page 472)

472 NT8D09 Analog Message Waiting Line card
must be installed. Details on installing protection devices are given in
“Environmental specifications” (page 317) . Off-premise telephones served
by cable pairs routed through the central office, or crossing a public
right-of-way, can be subject to a requirement for on-card protection, and
MDF protectors may not be acceptable. Check local regulations before
providing such service.
In-circuit protection against power line crosses or lightning is not provided
on the Analog Message Waiting line card. When the Analog line card
is used to service off-premise telephones, the NTAK92 Off-premise
protection module must be used. Check local regulations before providing
such service.
In-circuit protection against power line crosses or lightning is not provided
on the NT8D09 Analog Message Waiting Line Card. When the analog line
card is used to service off-premise telephones, the NTAK92 Off-Premise
protection module must be used. Check local regulations before providing
such service.
Overload level
Signal levels exceeding +7 dBm applied to the tip and ring cause distortion
in speech transmission.
Overload level
Signal levels exceeding +6.5 dBm applied to the tip and ring cause
distortion in speech transmission.
Overload level
Signal levels exceeding +7 dBm applied to the tip and ring cause distortion
in speech transmission.
Overload level
Signal levels exceeding +7 dBm applied to the tip and ring cause distortion
in speech transmission.
Environmental specifications
Table 197 "Analog message waiting line card - environmental
specifications" (page 472)
lists the environmental specifications for the
analog message waiting line card.
Table 197
Analog message waiting line card - environmental specifications
Parameter Specifications
Operating temperature 0

to +60

C (+32 to +140

F), ambient
Operating humidity 5 to 95% RH (non-condensing)
Storage temperature –40

to +70

C (–40

to +158

F)
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.