Nortel Meridian 1 Succession 1000 Manual page 51

Assignment of CLS VNL or non-VNL ensures stability and minimizes echo
on long-haul connections, 4-wire TIE, and CCSA. Similarly, assignment of a
non-VNL CLS applies to 2-wire TIE, COT, FEX, WAT, CCSA, and
4-wire non-VNL facilities. The DPS non-VNL CLS options are
• TRC — 2-wire non-VNL trunk facility with a loss of greater than 2 dB
— 2-wire non-VNL trunk facility with impedance compensation
— 4-wire non-VNL facility
• NTC — 2-wire non-VNL trunk facility with a loss of less than 2 dB
— 2-wire non-VNL trunk facility when impedance
compensation is not provided
The DPS-related options for the International Generic XFCOT (NT5K16)
COT are
• SHL (Short line) — transmission lines of relatively short length, low loss
• LOL (Long line) — transmission lines of relatively long length, high loss
The DPS-related options in an international context for all other trunks are
• NTC (Non-Transmission Compensated) — transmission lines without
compensation, high loss
Pad out (pad not applied)
Applies to EAM, EM4 and WR4 TIE trunks.
UK LINK setting.
• TRC (Transmission Compensated) — transmission lines with
compensation, low loss
Pad in (pad applied)
Applies to EAM, EM4 and WR4 TIE trunks.
UK TIE setting.
• VNL (Via Network Loss) — no particular meaning in a European
context, equivalent to TRC
Pad in (pad applied)
Applies to EAM and EM4 TIE trunks.
UK TIE setting.
Dynamic Pad Switching
Transmission Parameters
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