I am looking for some help in finding a call flow process steps or diagram.
A phone goes off hook and contacts the Publisher via XYZ protocol
The Publisher then does this and that
A number is pressed on the phone and this happens
I hope that makes since. I'm just looking for detailed step-by-step lists or diagrams about how the phones, servers, etc. work together in different scenarios. I've looked around for awhile have not found anything yet.
Ok. So, here are the basics. 1st - the Publisher should typically NOT have phones registered to it. The Subscriber is the primary call processing node. So, your example would be this:
Phone goes off --> SCCP Off-Hook message goes to Subscriber
Subscriber says "Ok, you're off-hook you should hear dial tone" --> SCCP message goes to phone telling it to play dial tone
Phone dials 7035551212 --> For each digit, a SCCP message is sent to the Subscriber and it collects this digits for call processing, it finds a match
Subscriber sends a SCCP message to the phone with 7035551212 and tells the phone to ring
Subscriber sends a SCCP message to the dialing phone telling to to play ringback tone
Each party picks up and SCCP messages are received by the Subscriber and at this time, it sends each phone a Start Media Transmission message
At this point each phone opens up a channel to send/receive RTP streams directly to each other
The subscriber is not involved in the call flow unless one of the phones invokes a supplementary service (hold, transfer, etc) and then when each phone hangs up, the Subscriber sends a message to each phone to tear down the RTP channel between each phone.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...