Nortel Networks NN43001-301 manual Switch S3 Mode of operation, Switch S4 Carrier shield grounding

2402.0 Mb DTI implementation

Switch S3 - Mode of operation

This switch selects the operational mode for the NTAK10. The NTAK10 supports firmware that allows it to operate in the standard CEPT format mode or the modified CEPT format used in France.

Table 86

Switch S3

Switch	Off (Up)	On (Down)
S3-1	Non-French Firmware	French Firmware
S3-2	Spare	Spare

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 753/4 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	Off (Up)	On (Down)
S4-1	Receive Shield	Frame Ground on
	Unconnected	Receive Shield
S4-2	Transmit Shield	Frame Ground on
	Unconnected	Transmit Shield

Note: The usual method is to ground the outer conductor of the receive coax signal.

Insert the NTAK10

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.

Secure the circuit card in the cabinet or Media Gateway by locking the lock latch assemblies.

Procedure 39

Connecting the cables

Step Action

1In the cabling area, located directly below the card cage, remove the retaining bar that secures the MDF cables. Connect the NTBK05DA/CA interface cable to the 50-pin Amphenol connector

Nortel Communication Server 1000

ISDN Primary Rate Interface Installation and Commissioning

NN43001-301 02.03 Standard

Release 5.5 7 December 2007

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