Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario

 NT8D09 Analog Message Waiting Line card

service off-premise telephones, the NTAK92 Off-premise protection module 
must be used. Check local regulations before providing such service.

Signal levels exceeding +7 dBm applied to the tip and ring cause distortion in 
speech transmission.

Table 176 lists the environmental specifications for the analog message 
waiting line card.

The analog message waiting line card brings the 16 phone lines to the IPE 
backplane through a 160-pin connector shroud. The backplane is cabled to the 
I/O panel on the rear of the module, which is then connected to the MDF by 
25-pair cables.

Telephone lines from station equipment cross connect to the analog message 
waiting line card at the MDF using a wiring plan similar to that used for trunk 
cards. A typical connection example is shown in Figure 108 on 

 and 

 shows the I/O pin designations at the backplane 

connector. This connector is arranged as an 80-row by 2-column array of 
pins. Normally, these pin positions are cabled to 50-pin connectors at the I/O 
panel in the rear of each module for connection with 25-pair cables to the 
cross-connect terminal.

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)