Physical description – Nortel Networks Circuit Card 311 User Manual
Page 860
860
NTAK09 1.5 Mb DTI/PRI card
The NTAK09 is a standard-size intelligent peripheral equipment circuit card
in the Option 11C main and IP expansion cabinets. It provides 1.5Mb ISDN
primary rate interface and digital trunk interface capability. The NTAK09 can
be equipped with two daughterboards: the NTAK20 clock controller and the
NTAK93/NTBK51 D-Channel handler interface.
The NTAK09 is being replaced by the NTRB21 - TMDI (DTI/PRI/DCH) which
is described in
"NTRB21 DTI/PRI/DCH TMDI card" (page 1053)
The NTAK09 1.5 Mb DTI/PRI digital trunk card is a standard-size IPE circuit
card.
ATTENTION
IMPORTANT!
Each Media Gateway that has a digital trunk must have a clock controller clocked
to an external reference clock.
Note: Clocking slips can occur between Media Gateways that are
clocked from different COs, if the COs are not synchronized. The slips
can degrade voice quality.
The NTAK09 provides 1.5Mb ISDN primary rate interface and digital trunk
interface capability. The NTAK09 can be equipped with two daughterboards:
the NTAK20 clock controller and the NTAK93/NTBK51 D-channel handler
interface.
Digital trunk cards are supported only in the Media Gateway but not in the
Media Gateway Expansion. Up to four digital trunk cards are supported in
each Media Gateway. The NTAK09 card can be installed in Slot 1, 2, 3,
and 4 of the Media Gateway.
In North America, the NTAK09 can be replaced by the NTRB21 – TMDI
(DTI/PRI/DCH) card, which is described in
Contact your system supplier or your Nortel Networks representative to
verify that this card is supported in your area.
Physical description
The DTI/PRI card uses a 9:5" by 12.5" multilayer printed circuit board
with buried power and ground layers. The clock controller and D-channel
daughterboards are fastened by standoffs and connectors. See
"NTAK09 DTI/PRI circuit card" (page 861)
.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.