Ringback issues
When you are working with H323 configurations, you can experience teh following ringtones issues , let’s see these issues and how to fix it quickly: No Ringback tone on an IP Phone when...
read moreH225 RAS Messages
Here are the different messages used by the H225 RAS signaling which can occur between endpoints and GK. Gatekeeper Discovery : used by endpoints to register GRQ : Gatekeeper Request GCF :...
read moreH323 Stack
We have already spoken about Gatekeeper signaling in this previous post but let’ be more general and see what are the common elements of H.323 stack. We have H225 RAS ( Registration Admission...
read moreSIP Messages
In SIP , you will find 2 types of SIP Messages, there are: Request: A message sent by a client to a server that is used to invoke certains operations or functions. Response : A message sent by a...
read moreSIP Elements
Here are various elements, definitions of what you can find in SIP world: User Agent (UA) : This an endpoint that can act as both an User Agent Client (UAC) and an User Agent Server (UAS), a good...
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