Nortel Networks Circuit Card 311 - Manual (Page 196)

196 NT5D11 and NT5D14 Lineside T1 Interface cards
• The address of the shelf in which the card resides
These two addresses are combined to create a unique address for the
card. The MMI reads the address of the card within the shelf from the card
firmware; however the address of the shelf must be set by this dip switch.
The shelf address dip switch can be from 0 – 15. 16 is the maximum number
of Lineside T1 IPE shelves (a maximum of 64 Lineside T1 cards) capable of
daisy chaining to a single MMI terminal. For ease, it is recommended that
this address be set the same as the address of the peripheral controller
identifier in LD 97 for type: XPE. This is not possible because the dip switch
is limited to 16; however, this is not mandatory.
T1 framing
The Lineside T1 card is capable of interfacing with CPE or CSU equipment
either in D4 or ESF framing mode. Make the selection for this dip switch
position based on what type of framing the CPE or CSU equipment supports.
T1 Coding
The Lineside T1 card is capable of interfacing with CPE or CSU equipment
using either AMI or B8ZS coding. Make the selection for this dip switch
position based on what type of coding the CPE or CSU equipment supports.
DSX-1 length
Estimate the distance between the Lineside T1 card and the hardwired
local CPE, or the Telco demarc RJ48, for the carrier facility connecting the
Lineside T1 and the remote CPE. Make the selection for this dip switch
position based on this distance.
Line supervision on T1 failure
This setting determines in what state all 24 ports of the Lineside T1 card
appears to the Meridian 1 in case of T1 failure. Ports can appear to the
Meridian 1 as either in the on-hook or off-hook states on T1 failure.
Note: All idle Lineside T1 lines go off-hook and seize a Digitone
Receiver when the off-hook line processing is invoked on T1 failure. This
may prevent DID trunks from receiving incoming calls until the Lineside
T1 lines time-out and release the DTRs.
Daisy-Chaining to MMI
If two or more Lineside T1 cards are installed and the MMI is used,
daisy-chain the cards together to use one MMI terminal or modem, See
Figure 38 "Lineside T1 card - connecting two or more cards to the MMI"
(page 218)
. Make the selection for this dip switch position based on how
many Lineside T1 cards are installed.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
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