Tag: Proxy
-
SIP User Credentials in the ITSP environment – part 3
•
In this, the third part of the article, we will look at how the ITSP Proxy server handles outbound calls, paying particular attention to the authentication requirements and to the handling of Caller ID. You may also wish to refer back to part 1 where we reviewed the basic entities and concepts used to identify a user, a handset or service and how these entities are used to register devices. The same entities are also used…
-
SIP User Credentials in the ITSP environment – part 2
•
In part 1 of this article we reviewed the basic entities and concepts used to identify a user, a handset or service. It discussed in detail how these entities are used to register devices, either simple single-line devices or SIP trunks. Now, in part 2, we will examine in more detail the handling of inbound calls, particularly in the context of using OpenSIPS as an ITSP front end server. Part 3 will look at handling of…
-
SIP User Credentials in the ITSP environment – part 1
•
This three-part article reviews the SIP entities that identify a user, a handset or service and looks at how they are used to register devices, authenticate and identify users and route calls. The subtle differences in the use of these entities can be confusing, even to an experienced SIP technician. Handling of the entities in a live ITSP environment, especially when dealing with a mix of simple single-line devices alongside multi-channel SIP trunks, is quite challenging.…
