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Page 448 of 544 NTAK09 1.5 Mb DTI/PRI card
553-3011-100 Standard 14.00 January 2002
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.
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
• 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)
• faceplate monitor jacks for T-1 interface
• configurable D-channel data rate with 64 Kbps, 56 Kbps or 64 Kbps
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.
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.