> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/configuration-details/configuration-by-use-case/rtp-no-anchoring/creating-profiles/modifying-sip-profile-settings.md).

# Modifying SIP Profile Settings

**To configure SIP settings, do the following:**

\
1- Click SIP in the Editing Profile window, to display the customizable options.

<figure><img src="https://docs.telcobridges.com/w/images/7/72/ProfilesVoipSip_A_0.png" alt=""><figcaption></figcaption></figure>

2- Select one or more DTMF-Relay relay schemes. By default they are in this order:

<figure><img src="https://docs.telcobridges.com/w/images/thumb/7/79/Profiles_dtmf_relay_scheme.png/1000px-Profiles_dtmf_relay_scheme.png" alt=""><figcaption></figcaption></figure>

* You can change this by selecting Remove or << button to add them again

You can get more details here: [DTMF-Relay](/appendices/appendix-a-glossary/glossary-dtmf-relay.md)\
\
3- Modify Advanced settings as required.

* Then click Save

<figure><img src="https://docs.telcobridges.com/w/images/6/69/ProfilesVoipSip_1_A.png" alt=""><figcaption></figcaption></figure>

### List of Parameters

SIP

* [Use SIP strict routing](/configuration-details/configuration-parameters-all.md#parameter-sip-use-sip-strict-routing)
* [Detect 180 with SDP as early media](/configuration-details/configuration-parameters-all.md#parameter-sip-detect-180-with-sdp-as-early-media)
* [Send 180 with SDP](/configuration-details/configuration-parameters-all.md#parameter-sip-send-180-with-sdp)
* [Don't forward 183 progress](/configuration-details/configuration-parameters-all.md#parameter-sip-dont-forward-183-progress)
* [Use non ambiguous From tag](/configuration-details/configuration-parameters-all.md#parameter-sip-use-non-ambiguous-from-tag)
* [Use reason header](/configuration-details/configuration-parameters-all.md#parameter-sip-use-reason-header)
* [Use isup-oli format](/configuration-details/configuration-parameters-all.md#parameter-sip-use-isup-oli-format)
* [Enable SIP Custom Headers](/configuration-details/configuration-parameters-all.md#parameter-sip-enable-sip-custom-headers)
* [Forward SS7 suspend/resume](/configuration-details/configuration-parameters-all.md#parameter-sip-forward-ss7-suspend-resume)
* [Forward SS7 CPG hold/retrieval](/configuration-details/configuration-parameters-all.md#parameter-sip-forward-ss7-cpg-hold-retrieval)
* [Forward SIP hold type](/configuration-details/configuration-parameters-all.md#sip-forward-sip-hold-type)
* [Max Forwards header handling](/configuration-details/configuration-parameters-all.md#sip-max-forwards-header-handling)
* [User-to-User encoding](/configuration-details/configuration-parameters-all.md#parameter-sip-user-to-user-encoding)
* [SDP generation options](/configuration-details/configuration-parameters-all.md#parameter-sip-sdp-generation-options)
* [SDP combining options](/configuration-details/configuration-parameters-all.md#parameter-sip-sdp-combining-options)
* [Insert custom SIP BYE headers](/configuration-details/configuration-parameters-all.md#parameter-sip-insert-custom-sip-bye-headers)


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