SIP Registration
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== Polling == | == Polling == | ||
| + | * "Poll Remote Proxy?" is enabled by default | ||
* Tmedia SIP polling is using SIP OPTIONS method to "poke" a SIP Network Access Point (NAP) to see if it's alive or not, that is, NAP availability | * Tmedia SIP polling is using SIP OPTIONS method to "poke" a SIP Network Access Point (NAP) to see if it's alive or not, that is, NAP availability | ||
* Upon a response from the SIP NAP, Tmedia will determine whether to mark the NAP as up | * Upon a response from the SIP NAP, Tmedia will determine whether to mark the NAP as up | ||
| − | * This is true, only if the option "Map any response to available status" is checked, otherwise, only a 200 OK to a SIP OPTIONS will bring the NAP up | + | * This is true, only if the option "Map any response to available status" is checked (by default), otherwise, only a 200 OK to a SIP OPTIONS will bring the NAP up |
* With "Map any response to available status" checked, 200-600 answer response can return from OPTIONS request, with these response the NAP is considered up | * With "Map any response to available status" checked, 200-600 answer response can return from OPTIONS request, with these response the NAP is considered up | ||
* The first time a SIP NAP is added in configuration and configuration activated, Tmedia polls at 5s, after that and general use is polling at 60s | * The first time a SIP NAP is added in configuration and configuration activated, Tmedia polls at 5s, after that and general use is polling at 60s | ||
| Line 17: | Line 18: | ||
* If it's not registered already, the Tmedia will send SIP REGISTER at 5s interval, otherwise it's at the half of the minimum registration negotiated with the remote proxy(endpoint) | * If it's not registered already, the Tmedia will send SIP REGISTER at 5s interval, otherwise it's at the half of the minimum registration negotiated with the remote proxy(endpoint) | ||
* The SIP REGISTER is "valid" for 3600s | * The SIP REGISTER is "valid" for 3600s | ||
| + | * There is no way to extend the delay of the SIP registration, so Tmedia has to send a new REGISTER after half of the minimum registration negotiated, general use will be at 1800s (3600/2) | ||
| + | * Sending SIP REGISTER will happen when the option "Register to Proxy?" is selected for a specific SIP NAP | ||
| + | * If you apply a new configuration and the option "Register to Proxy?" is present it will start sending SIP REGISTER | ||
| + | |||
| + | == Nap Availability == | ||
| + | If "Polling Remote Proxy?" and "Register to Proxy?" are both checked, only the SIP OPTIONS answers will affect the NAP availability | ||
Revision as of 02:31, 21 March 2016
Contents |
SIP Registrar
A registrar is a SIP endpoint that accepts REGISTER requests and places the information it receives in those requests into a location service for the domain it handles. The location service links one or more IP addresses to the SIP URI of the registering agent. The URI uses the sip: scheme, although other protocol schemes are possible, such as tel:. More than one user agent can register at the same URI, with the result that all registered user agents receive the calls to the URI.
SIP registrars are logical elements, and are commonly co-located with SIP proxies. But it is also possible and often good for network scalability to place this location service with a redirect server.
Polling
- "Poll Remote Proxy?" is enabled by default
- Tmedia SIP polling is using SIP OPTIONS method to "poke" a SIP Network Access Point (NAP) to see if it's alive or not, that is, NAP availability
- Upon a response from the SIP NAP, Tmedia will determine whether to mark the NAP as up
- This is true, only if the option "Map any response to available status" is checked (by default), otherwise, only a 200 OK to a SIP OPTIONS will bring the NAP up
- With "Map any response to available status" checked, 200-600 answer response can return from OPTIONS request, with these response the NAP is considered up
- The first time a SIP NAP is added in configuration and configuration activated, Tmedia polls at 5s, after that and general use is polling at 60s
Registration
- Registration is Tmedia sending SIP REGISTER to Registrar, and get answer response which could be accepted (200OK) or refused (anything else)
- Even if there's no calls on the system, Tmedia will send SIP REGISTER.
- If it's not registered already, the Tmedia will send SIP REGISTER at 5s interval, otherwise it's at the half of the minimum registration negotiated with the remote proxy(endpoint)
- The SIP REGISTER is "valid" for 3600s
- There is no way to extend the delay of the SIP registration, so Tmedia has to send a new REGISTER after half of the minimum registration negotiated, general use will be at 1800s (3600/2)
- Sending SIP REGISTER will happen when the option "Register to Proxy?" is selected for a specific SIP NAP
- If you apply a new configuration and the option "Register to Proxy?" is present it will start sending SIP REGISTER
Nap Availability
If "Polling Remote Proxy?" and "Register to Proxy?" are both checked, only the SIP OPTIONS answers will affect the NAP availability
Configuration
- Allocating a SIP NAP Configuration v2.9
- Allocating a SIP NAP Configuration v2.8
- Allocating a SIP NAP Configuration v2.7
- Allocating a SIP NAP Configuration v2.5
