Nortel Networks NN43001-301 User Manual

Page 202

202

1.5 Mb PRI implementation

Shelf slot assignments for NTRB21, NTAK09 and NTAK20

Table 74 "Shelf slot assignments for NTRB21, NTAK09, and NTAK20"
(page 202)

provides the shelf slot assignments for the NTRB21 TMDI card,

NTAK09 DTI/PRI card, and NTAK20 Clock Controller daughterboard in
Small Systems. The NTAK 93 DCH and NTBK51BA DDCH daughterboards
are not included in this table since they are mounted on the NTAK09
DTI/PRI circuit card and not on a shelf.

Table 74
Shelf slot assignments for NTRB21, NTAK09, and NTAK20

NTAK20

Clock controller

daughterboard

NTRB21

TMDI card

NTAK09

DTI/PRI

circuit card

CISPR B

cabinets

Non-

CISPR B

cabinets

Main

1 – 9

1 – 3

1 – 9

(see Note 2)

Expansion 1

11 – 19

11 – 13

11 – 19

Expansion 2

21 – 29

21 – 23

21 – 29

Expansion 3

31 – 39

31 – 33

31 – 39

Small
System

Expansion 4

41 – 49

41 – 43

41 – 49

Note: On cabinets NTAK11Dx and NTAK11Fx, the active card must be
placed in slots 1 – 3 (slots 4 to 10 cannot be used).

NTAK93 D-channel Handler Interface (DCHI) daughterboard

The NTAK93 DCHI daughterboard interfaces with the system Central
Processing Unit (CPU) and mounts on the NTAK09 DTI/PRI circuit card
for PRI or ISL shared mode applications. The DCHI is responsible for
performing the Q.921 layer 2 protocol information. It transfers layer 3
signaling information between two adjacent network switches.

The NTAK93 DCH daughterboard, when installed on the NTAK09 circuit
card, is addressed in the same slot as the NTAK09. The NTAK93 can use
SDI I/O addresses 0 to 79 and port 1.

Note: I/O addresses 0, 1, 2, 8 and 9 are preconfigured on the Small
System and must not conflict with the I/O addresses on the NTAK93
card.

A minimum of one NTAK93 is required for each PRI link. If more than one
PRI link connects to the same end location, a single DCHI circuit card can
support up to a maximum of sixteen PRI connections for the Small System.

Nortel Communication Server 1000

ISDN Primary Rate Interface Installation and Commissioning

NN43001-301

02.03

Standard

Release 5.5

7 December 2007