Nortel Networks 553-3001-211 manual Software description, Hardware description, NTRB21 Tmdi card

NTRB21 DTI/PRI/DCH TMDI card Page 819 of 894

Software description

Changes from the NTAK09 are required for the new trunk card and License parameters are n service change and maintenance overlays. There is a change to CardLAN to introduce a new CardLAN ID. The download of PSDL data is also changed to handle a 32 bit download as well as existing 16 bit.

Hardware description

NTRB21 TMDI card

The NTRB21 TMDI card provides 1.5 MBits Digital Trunk Interface or

Primary Rate Interface functionality. It also has a built-in downloadable

D-channel.

The NTRB21 can be used with the NTAK09 DTI/PRI card (with the

NTBK51 downloadable D-channel daughterboard).

Figure 175 on page 820 shows a faceplate of the NTRB21 TMDI card.

Architecture

Signaling interface

The signaling interface performs an 8 Kbps signaling for all 24 channels and interfaces directly to the DS-30X link. Messages transmitted in both directions are three bytes long.

Interconnection

The interconnection to the carrier is by NTBK04, a 1.5 Mb 20 ft. carrier cable. The NT8D97AX, a fifty-foot extension cable, is also available.

Circuit Card Description and Installation