Nortel Circuit Card Installation Manual page 345

DCH Address select switch for NTBK51AA daughter board for
NT5D97AA/AB
Table 128
NTBK51AA daughterboard address select switch settings (Part 1 of 2)
Device Address
0
1
Table 126
Ring ground switch settings (Part 2 of 2)
Switch Description
3 Trunk 1 Transmit
4 Trunk 1 Receive
In case of an on-board NTBK51AA D-channel daughterboard, set of four
switches (S3) provide the daughterboard address. Refer to Table 134 on
page 350.
Note: Switch 8 of S3 (S3-8) does not require a switch setting to select
between the on-board NTBK51AA D-channel daughterboard and an
external DCHI/MSDL. The NT5D97 detects when the on-board
NTBK51AA D-channel daughterboard is used.
Table 127
DCH mode and address switch settings
Switch Description
1-4 D-channel daughterboard address
5-8 For future use
Table 128 shows the possible selection of the NTBK51AA D-channel.
OFF
ON
NT5D97 Dual-port DTI2/PRI2 card
S2 switch settingS
OFF-Ring line is not grounded
ON- Ring line is grounded
OFF-Ring line is not grounded
ON- Ring line is grounded
Switch Setting
OFF
OFF
Circuit Card
Page 345 of 906
S3 switch setting
See Table 128
OFF
OFF OFF
OFF OFF
Description and Installation