Cables; Hardware Description; 2.0 Mb Pri Cards - Nortel Meridian 1 Option 11C Manual

Page 38 of 126 2.0 Mb PRI Implementation

Cables

Hardware description

2.0 Mb PRI cards

553-3011-315 Standard 13.00
The following cables are required for PRI connections:
• CEPT Cable - NTBK05DA (120 ¾ twisted pair—6.15 m length)
• CEPT Cable - NTBK05CA (75 ¾ coaxial—6.15 m length)
Two PRI cards are available on the Option 11C system:
• NTAK79 2.0 Mb PRI card
• NTBK50 2.0 Mb PRI card
The difference between the two PRI cards is the ability of the NTBK50, when
equipped with the NTBK51 D-channel daughterboard, to download software
onto the card. This feature is based on the MSDL platform and essentially
replaces the D-channel circuit on the NTAK79 PRI card. (The NTAK79 PRI
card does not support the NTBK51 Downloadable D-channel handler
daughterboard.)
A second difference between the NTAK79 and NTBK50 2.0 Mb PRI cards is
that the NTAK79 has an on-board clock controller while the NTBK50
supports the NTAK20 clock controller daughterboard.
Note: If the NTAK93 D-channel daughterboard is attached to the
NTBK50 PRI card instead of the NTBK51 Downloadable D-channel
daughterboard, the NTBK50 PRI card functions in the same manner as
the NTAK79 PRI card.
NTAK79 2.0 Mb PRI circuit card
The 2.0 Mb Primary Rate Interface card provides the physical interface for
the digital E-1 carrier on the Option 11C system. The card includes an
on-board clock controller and on-board D-channel handler. It is installed in
slots 1 through 9 in the main cabinet. On IP Expansion cabinets, it may be
placed in slots 11-19, 21-29, 31-39, 41-49 of the first, second, third, and
fourth expansion cabinets, respectively.
January 2002
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