Server User's Manual

NT5D97 Dual-port DTI2/PRI2 card 35

Two control signals are used to communicate the D-channel link status

to the DCH or MSDL. These are:

•

Receiver Ready (RR), originating at the DDP2 card, to indicate to the

DCH or MSDL that the D-channel link is operational.

•

Transmitter Ready (TR), originating at the DCH or MSDL, to indicate to

the DDP2 card that the DCH are ready to use the D-channel link.

Table 6 "DCH/MSDL Receiver Ready control signals" (page 35) indicates

how the RR control signal operates with regard to the DDP2 status.

Table 6

DCH/MSDL Receiver Ready control signals

RR State Condition

ON D-Channel data rate selected at 64 Kbps

and

PRI2 loop is enabled

and

PRI2 link is not in OOS or Local Alarm mode state

and

PRI2 link is not transmitting a Remote Alarm pattern

and

PRI2 link is not receiving a Remote Alarm Indication from

a remote facility

OFF All other conditions

NT5D97 faceplate

Figure 8 "NT5D97 faceplate" (page 36) illustrates the faceplate layout for

the NT5D97 DDP card. The faceplate contains an enable/disable switch;

a DDCH status LED; 6 x 2 trunk port status LEDs; and six external

connectors. Table 7 "External connectors and LEDs" (page 36) shows the

name of each connector, its designation with respect to the faceplate and

the name and description of the card it is connected to. Also shown are the

names of the LEDs.

Nortel Communication Server 1000

ISDN Primary Rate Interface Installation and Commissioning

NN43001-301 02.03 Standard

Release 5.5 7 December 2007