Call Origination And Completion - Paradyne Jetstream CPX-1000 Installation And Operation Manual

1. Voice-over-Broadband Networking
Call
Origination
and
Completion
1-6
These steps describe the network interaction that occurs when a
subscriber initiates a call
A subscriber initiates the call by taking the telephone off-hook.
1.
The IAD notifies the CPX through the Common Channel
2.
Signaling (CCS) channel in the voice PVC.
The CPX sends an outgoing call request message to the Class 5
3.
switch through the PSTN (GR-303 protocol) Time Management
Channel (TMC).
The Class 5 switch selects the available time slot in a PSTN
4.
interface group and directs the CPX to connect the IAD port to
the specified time-slot on the switch.
The host Class 5 switch provides dial tone.
5.
The CPX cuts the calling station through to the switch.
6.
The subscriber dials the destination number and the Class 5
7.
switch collects DTMF digits.
The Class 5 switch routes the call, returns the call progress, and
8.
generates a call data record.
The CPX notifies the Class 5 switch when the station hangs up.
9.
Telephone IAD
1
2
5
7
7
9
Figure 1–5. Subscriber Initiates a Call
(Figure 1–5):
CPX-1000 Class 5 Switch
3
4
5
5
6
7
8
1000-A2-GN22-00
PSTN
0352
February 2003