1. Voice-over-Broadband Networking
1000-A2-GN22-00
1-6
February 2003
Call
Origination
and
Completion
These steps describe the network interaction that occurs when a
subscriber initiates a call (
Figure 1–5
):
1.
A subscriber initiates the call by taking the telephone off-hook.
2.
The IAD notifies the CPX through the Common Channel
Signaling (CCS) channel in the voice PVC.
3.
The CPX sends an outgoing call request message to the Class 5
switch through the PSTN (GR-303 protocol) Time Management
Channel (TMC).
4.
The Class 5 switch selects the available time slot in a PSTN
interface group and directs the CPX to connect the IAD port to
the specified time-slot on the switch.
5.
The host Class 5 switch provides dial tone.
6.
The CPX cuts the calling station through to the switch.
7.
The subscriber dials the destination number and the Class 5
switch collects DTMF digits.
8.
The Class 5 switch routes the call, returns the call progress, and
generates a call data record.
9.
The CPX notifies the Class 5 switch when the station hangs up.
Figure 1–5. Subscriber Initiates a Call
1
7
9
2
5
3
7
7
5
6
4
5
8
0352
PSTN
Telephone
IAD
CPX-1000
Class 5 Switch
Summary of Contents for Jetstream CPX-1000
Page 14: ...Preface 1000 A2 GN22 00 x February 2003...
Page 24: ...1 Voice over Broadband Networking 1000 A2 GN22 00 1 10 February 2003...
Page 64: ...2 CPX 1000 Voice Services Platform Description 1000 A2 GN22 00 2 40 February 2003...
Page 100: ...3 Installing the CPX 1000 1000 A2 GN22 00 3 36 February 2003...
Page 128: ...5 Repair Procedures 1000 A2 GN22 00 5 14 February 2003...
Page 156: ...D Specifications 1000 A2 GN22 00 D 8 February 2003...
