Nortel Networks Circuit Card 사용자 설명서

 NT8D14 Universal Trunk card

The NT8D14 Universal Trunk card meets UL-1489 and CS03 over-voltage 
(power cross) specifications and FCC Part 68 requirements.

Table 187 lists the environmental specifications for the NT8D14 Universal 
Trunk card.

Release control establishes which end of a call (near, far, either, joint, or 
originating) disconnects the call. Only incoming trunks in idle ground start 
configuration can provide disconnect supervision. You configure release 
control for each trunk independently in the Route Data Block (LD 16).

The transmission properties of each trunk are characterized by the 
class-of-service (COS) you assign in the Trunk Data Block (LD 14). 
Transmission properties may be via net loss (VNL) or non via net loss 
(non-VNL).

Non-VNL trunks are assigned either a Transmission Compensated (TRC) or 
Non-Transmission Compensated (NTC) class-of-service to ensure stability 
and minimize echo when connecting to long-haul trunks, such as Tie trunks. 

Operating temperature

0° to +60° C (+32 to +140° F), ambient

0 to 50 degrees C, ambient 
(Small Systems and CS 1000S)

Operating humidity

5 to 95% RH (non-condensing)

Storage temperature

–40° to +70° C (–40° to +158° F)