Nortel Networks Option 11C User Manual
Page 448 of 544
NTAK09 1.5 Mb DTI/PRI card
The NTAK09 is being replaced by the NTRB21 - TMDI (DTI/PRI/DCH)
which is described in “NTRB21 DTI/PRI/DCH TMDI card” on page 461.
which is described in “NTRB21 DTI/PRI/DCH TMDI card” on page 461.
Functional description
NTAK09 provides the following features and functions:
•
configurable parameters, including A/µ-Law operation, digital pads on a
per channel basis, and Superframe or Extended Superframe formats
per channel basis, and Superframe or Extended Superframe formats
•
AMI or B8ZS line coding
•
1.5 Mb Clock recovery and distribution of reference clocks
•
DG2 or FDL yellow alarm methods
•
card status and alarm indication with faceplate-mounted LEDs
•
automatic alarm monitoring and handling
•
Card-LAN for maintenance communications
•
loopback capabilities for both near end and far end
•
echo canceler interface
•
integrated trunk access (both D-channel and in-band A/B signaling can
be mixed on the same PRI)
be mixed on the same PRI)
•
faceplate monitor jacks for T-1 interface
•
configurable D-channel data rate with 64 Kbps, 56 Kbps or 64 Kbps
inverted.
inverted.
•
self-test
Physical description
The DTI/PRI card uses a standard IPEsized (9.5" by 12.5"), multilayer
printed circuit board with buried power and ground layers. It is keyed to
prevent insertion in slot 10. The clock controller and D-channel
daughterboards are fastened by standoffs and connectors.
printed circuit board with buried power and ground layers. It is keyed to
prevent insertion in slot 10. The clock controller and D-channel
daughterboards are fastened by standoffs and connectors.
The NTAK09 DTI/PRI card has seven faceplate LEDs. The first five LEDs
are associated with the NTAK09 card, the remaining two LEDs are associated
with the clock controller and DCHI daughterboards.
are associated with the NTAK09 card, the remaining two LEDs are associated
with the clock controller and DCHI daughterboards.