> 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/tmedia-documentation/configuration/web-portal-3-3/protocol-stack/sip/enabling-sip-spiral.md).

# Enabling SIP Spiral

> **Applies to:** Tmedia 3.0, 3.2, 3.3; SBC 3.1, 3.3

SIP spiral permits a SIP request to be routed to a proxy, forwarded onwards, and then be returned once again to the proxy with processing instructions that differ from the original request.

To enable SIP Spiral:

1- Select **SIP** from the navigation panel

![EnableSipSpiral 0](https://docs.telcobridges.com/w/images/a/a9/EnableSipSpiral_0.png)

2- Select a SIP configuration from the **Sip Configuration List**

![EnableSipSpiral 1](https://docs.telcobridges.com/w/images/a/a1/EnableSipSpiral_1.png)

3- Click **Quirks** to view options.

* Set the **Support Spiral Call** checkbox.
* Click **Save**

![EnableSipSpiral 2](https://docs.telcobridges.com/w/images/a/a9/EnableSipSpiral_2.png)

**Path**

```
/configurations/@[configuration_name]/sip_stacks/@[sipStack_Name]/quirks_and_advanced_parameters
```

**Parameters (text)**

```
/configurations/@[configuration_name]/sip_stacks/@[sipStack_Name]/quirks_and_advanced_parameters
add_angle_brackets_around_sip_uri        = true
advanced_transport_servers_configuration = false
clear_subscriptions_on_call_complete     = false
etsi_ts102_0272_2006_compliant           = false
generate_space_after_colon               = false
refuse_initial_invite_with_to_tag        = false
support_latin_characters                 = false
support_method_update                    = true
support_pound_and_backslash_in_user_info = true
support_quotes_in_quoted_string          = false
support_spiral_call                      = false
```

**Parameters (json)**

```
{
  "name" : "@[sipStack_Name]",
  "quirks_and_advanced_parameters" : {
    "add_angle_brackets_around_sip_uri" : true,
    "advanced_transport_servers_configuration" : false,
    "clear_subscriptions_on_call_complete" : false,
    "etsi_ts102_0272_2006_compliant" : false,
    "generate_space_after_colon" : false,
    "refuse_initial_invite_with_to_tag" : false,
    "support_latin_characters" : false,
    "support_method_update" : true,
    "support_pound_and_backslash_in_user_info" : true,
    "support_quotes_in_quoted_string" : false,
    "support_spiral_call" : false
  },
 }
```

### List of Parameters

* [Support Spiral Calls](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#s)
* [Generate Space After Colon](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#g)
* [Support # and \ in User Info](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip)
* [ETSI TS 102 027-2 2006 Compliant](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#e)
* [Clear Subscriptions on Call Complete](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#c)
* [Support Quotes in Quoted String](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#s)
* [Support Latin Characters](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#s)
* [Add Angle Brackets Around SIP URI](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#a)
* [Support method UPDATE](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#s)
* [Using Symmetric Response Routing](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#u)
* [Remove route header in outgoing invite](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#r)
* [Refuse initial INVITE with To tag](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#r)


---

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