# SIP NAP Polling

### Polling

* In Tmedia, option ["Poll Remote Proxy?"](/configuration-details/configuration-parameters-all.md#parameter-poll-remote-proxy) is enabled by default
* Tmedia SIP polling is using SIP OPTIONS method to "poke" a SIP [Network Access Point (NAP)](/appendices/appendix-a-glossary/glossary-nap.md) to see if it's alive or not, that is, [NAP](/appendices/appendix-a-glossary/glossary-nap.md) availability
* Upon a response from the SIP [NAP](/appendices/appendix-a-glossary/glossary-nap.md), Tmedia will determine whether to mark the [NAP](/appendices/appendix-a-glossary/glossary-nap.md) as up
* If the option ["Map any response to available status"](/configuration-details/configuration-parameters-all.md#parameter-map-any-response-to-available-status) is unchecked, any 2xx/3xx/4xx class response to a SIP OPTIONS will bring the [NAP](/appendices/appendix-a-glossary/glossary-nap.md) up
* The first time a SIP [NAP](/appendices/appendix-a-glossary/glossary-nap.md) is added in configuration and configuration activated, Tmedia polls at 5 seconds, after that and general use is polling at 60 seconds
  * Since version 3.0.73 NAP SIP MAP polling is configurable with two parameters:
    * Proxy Polling Interval (Default 1 minute)
    * Proxy Polling Response Timeout (Default 30 seconds)

### [Network Access Point (NAP)](/appendices/appendix-a-glossary/glossary-nap.md) Availability

If ["Poll Remote Proxy?"](/configuration-details/configuration-parameters-all.md#parameter-poll-remote-proxy) and ["Register to Proxy?"](/configuration-details/configuration-parameters-all.md#parameter-register-to-proxy) are both checked, only the SIP OPTIONS answers will affect the [NAP](/appendices/appendix-a-glossary/glossary-nap.md) availability.<br>

### Configuration

* [Allocating a SIP NAP Configuration v3.0](/configuration-details/configuration-by-web-portal-category/network-access-points-nap.md)

<details>

<summary>Click here for other versions</summary>

* [Allocating a SIP NAP Configuration v2.7](https://docs.telcobridges.com/wiki/Toolpack:Allocating_a_SIP_Network_Access_Point_\(NAP\)_B)
* [Allocating a SIP NAP Configuration v2.6](https://docs.telcobridges.com/wiki/Toolpack:Allocating_a_SIP_Network_Access_Point_\(NAP\)_B)
* [Allocating a SIP NAP Configuration v2.5](https://docs.telcobridges.com/wiki/Toolpack:Allocating_a_SIP_Network_Access_Point_\(NAP\)_A)<br>

</details>


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