# Edit PJSIP AOR

Use this page to tune the PJSIP Address of Record for a PJSIP extension. These settings control registration contact limits, contact expiration timing, mailbox subscription hints, and Path support. The screenshots use the **Canistracci Oil** demo PJSIP extension **101 Bella Stone**.

## Opening and saving

<table id="bkmrk-actiondescriptionope"><thead><tr><th>Action</th><th>Description</th></tr></thead><tbody><tr><td>Open</td><td>Open Configuration &gt; Extensions, edit a PJSIP extension, then choose the AOR detail link.</td></tr><tr><td>Edit</td><td>Update the required fields and select Save. The form returns to the PJSIP extension after saving.</td></tr><tr><td>Back</td><td>Use Back to return to the PJSIP extension without applying changes.</td></tr></tbody></table>

## Information

<figure id="bkmrk-information-section-">![Information section for PJSIP AOR for extension 101.](https://manual.mirtapbx.com/uploads/images/gallery/2026-06/aor-information.png)<figcaption>Information section for PJSIP AOR for extension 101.</figcaption></figure>Use this section for contact expiration limits, mailbox subscriptions, maximum registered contacts, registration contact cleanup, and Path support.

<table id="bkmrk-field-or-optionpurpo"><thead><tr><th>Field or option</th><th>Purpose</th></tr></thead><tbody><tr><td>Default Expiration</td><td>Default expiration time in seconds for contacts that are dynamically bound to an AoR</td></tr><tr><td>Minimum Expiration</td><td>Minimum expiration time in seconds for contacts that are dynamically bound to an AoR</td></tr><tr><td>Maximum Expiration</td><td>Maximum expiration time in seconds for contacts that are dynamically bound to an AoR</td></tr><tr><td>Mailboxes</td><td>Allow subscriptions for the specified mailbox(es)</td></tr><tr><td>Max Contacts</td><td>Maximum number of contacts that can bind to an AoR</td></tr><tr><td>Remove Existing</td><td>On receiving a new registration to the AoR should it remove enough existing contacts not added or updated by the registration to satisfy Max Contacts? Any removed contacts will expire the soonest.</td></tr><tr><td>Remove Unavailable</td><td>On receiving a new registration to the AoR should it remove unavailable contacts not added or updated by the registration to satisfy Max Contacts?</td></tr><tr><td>Support Path</td><td>Enables Path support for REGISTER requests and Route support for other requests.</td></tr></tbody></table>