I have a r2 digital, compelled and is working fine but the ringback is heard after 7 to 8 seconds (after second ringing on the other side) if the user called answer the phone (in the first ringing) the calling side never heard the ringback. I have tried change the Dnisdigits and worked only for one side but isnot working from the side that is originating is coming from ccm going to r2 to other side
Analog voice signalling in VoIP is sent via an analog voice port. Analog voice ports support three basic voice signalling types:
"FXO. Foreign Exchange Office interface. The FXO interface is an RJ-11 connector that allows a connection to be directed at the PSTN central office (or to a standard PBX interface, if the local telecommunications authority permits). This interface is of value for off-premises extension applications.
"FXS. The Foreign Exchange Station interface. This interface is an RJ-11 connector that allows connection for basic telephone equipment, keysets, PBXs, and supplies ring, voltage, and dial tone.
"E&M. The "ear and mouth" interface (or "recEive and transMit") interface. This interface is an RJ-48 connector that allows connection for PBX trunk lines (tie lines). It is a signalling technique for 2-wire and 4-wire telephone and trunk interfaces.
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...