04B_ZXJ10_V100_CALL flow signaling knowledge.PPT

Call flow

1. MP
MP
MPPP
TNET
DTMF TONE
SP
COMM
TNET
TONEDTMFSP

A

B
FBI FBI
FBI FBI
TNETCOMM
COMM
#1MP #2MP

2. question
Call can hear ringing tone，called user can ring，
but they can not communicate whe they hang up
the phone？
Which module tone board sends the ringing tone ？
Does the communication between two PSM pass
the #1、#2MP of SNM?
How many time slots does inter module
communication seize？