Teltone TSP Edge, Руководство пользователя

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TSP Edge User’s Manual
40-400-00065, Rev. E 144
E1 ITU Q.421
E1 ITU Q.421 - Call Terminate
0 Seizure by equipment under test
Delay Before Seize Acknowledge timer starts.
1 Delay Before Seize Acknowledge timer expires.
Edge sends seize acknowledge
Delay Before Answer timer starts
2 Delay Before Answer timer expires
Edge sends answer.
Delay Before Ringback
1
timer starts
3 Delay Before Ringback timer expires.
Ringback starts.
Ringback length timer starts.
4 Ringback length timer expires.
Ringback ends.
Call Duration timer starts.
Delay before Message
2
timer starts.
5 Delay before message timer expires.
Edge starts playing audio message.
6 Edge detects on-hook from equipment under test.
Far-end Disconnect timer starts.
Note: If Call Duration timer expires before detecting on-hook from the
equipment under test, the Edge will send 850ms COD.
7 Far-end disconnect timer expires.
Disconnect to start of new call timer starts.
Note: If equipment under test goes back off-hook before the Far-End
Disconnect timer expires, the Edge goes back to looking for step 6.
8 Disconnect to start of new call timer expires.
Edge ready to receive next call.
1
If Ringback is disabled in template, proceed directly to step 4.
2
If no Audio Message is programmed for the channel, proceed directly to step 6.
Call Connected
TSP Plays
Audio
Message
Far-End Disconnect
guard time
Call Disconnect
Disconnect
To Start Of
New Call
Call Setup
Delay Before
Ringback
Delay Before
Message
Delay Before
Seize
Acknowledge
TSP Sends
Ringback
Delay Before
Answer
0 1 2 3 4 5 6 7 8