Nortel Networks Circuit Card 311 User Manual

Page 1014

1014

NTCK16 Generic Central Office Trunk cards

Note: PPM is available on the NTCK16AX trunk card. It is not
supported on the NTCK16BX trunk card.

PPM allows the user of a telephone to keep an accurate record of Central
Office calls for billing or administration purposes.

Detection limits

Pulses detected by the NTCK16AX circuit card must be within the following
limits:

Frequency

11 880 to 12 120 Hz

Level

105 to 1100 mVrms

Note: The pack should not be used to
detect levels of 1100 mVrms or greater
a Tip and Ring, as this may result in
noise.

Pulse length

Dependent on PPID – see LD 14

Busy tone detect

Busy tone is sent by the Central Office to indicate the release of an
established call.

Detection limits

The NTCK16AX and NTCK16BX generic Central Office trunk cards can
detect busy tone within the following limits:

Frequency

400 to 620 Hz

Level

–30 to 0 dBm

Cadence

See on

page 803

Loss switching

The Generic XFCOT is based on the XFCOT design, which is using a static
pad download algorithm by default for its loss plan.

The generic XFCOT has to be set explicitly to a Dynamic Pad Switching
mode to make it compliant with the standard North American Dynamic Pad
Switching mode.

Therefore the following steps must be followed when the Generic XFCOT
is installed:

1. Define Loss Switching mode. Respond to the prompts in LD 97 as

shown.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311

01.04

Standard

Release 5.0

23 May 2008