Nortel Communication Server 1000S Installation And Configuration Manual page 304

Page 304 of 394
Insert the NTAK10
553-3001-201 Standard 2.00
2.0 Mb DTI implementation
Switch S4 — Carrier shield grounding
This switch supports selective shield grounding of the Tx and/or Rx pairs of
the carrier cable. Closing the switch (down position) applies Frame Ground
(FGND) to the coaxial carrier cable shield, creating a 75¾ unbalanced
configuration. The Tx and Rx pairs are referenced with respect to the 2.0 Mb
DTI card that is, Rx is carrier received from the far-end device.
Table 87
Switch S4
Switch
S4-1
S4-2
Note: The usual method is to ground the outer conductor of the receive
coax signal.
Install the circuit card in slots 1-9 in the Option 11C Cabinet, or in slots 11-19,
21-29, 31-39, 41-49 of the first, second, third, and fourth IP expansion
cabinets, respectively.
For CS 1000S, it is placed in logical slots 11-14, 21-24, 31-34, 41-44 of the
first, second, third and fourth MG 1000S, respectively.
Note: For CS 1000S, physical card slots are numbered 1-4 on the first,
second, third and fourth MG 1000S.
Secure the circuit card in the cabinet or MG 1000S by locking the lock latch
assemblies.
September 2004
Off (Up)
Receive Shield
Unconnected
Transmit Shield
Unconnected
On (Down)
Frame Ground on
Receive Shield
Frame Ground on
Transmit Shield