Nortel Networks 553-3001-211 Carrier interface, Periodic Pulse Metering PPM, TS16 microprocessor

Page 716 of 894 NTAK10 2.0 Mb DTI card

With the exception of the outpulsing signals and special signals, such as Denmark's Flash signal and Sweden's Parking signal, the minimum duration of any signal state is 100 ms. Some signal states can have a minimum duration time that is longer than 100 ms.

Periodic Pulse Metering (PPM)

Periodic Pulse Monitoring (PPM) is used to collect toll charges on outgoing CO trunk calls.

TS16 microprocessor

The functions of this microprocessor include:

•receiving signaling messages supplied by the DS-30X microprocessor, decoding these messages, and taking subsequent actions

•transmitting messages to the DS-30X microprocessor

•handling PPM

•updating the TS16 select RAM and TS16 data RAM

•providing outpulsing

•receive data from the change-of-state microprocessor

•transmitting AIS for CNET (France) application

Change-of-state microprocessor

The functions of this processor are:

•detecting valid change of state in TS16

•when a valid change has been found, passing the new abcd bits to the TS16 microprocessor, along with five bits to indicate the associated channel

Carrier interface

Tx Direction

The HDB3 encoded multiplexer output is sent to the output selector, which selects the PCM/Data output or the looped around far end data. The HDB3 is

553-3001-211 Standard 2.00 September 2004