If you do not have an OnSIP account, please contact Sales: 1- 800- 801- 3381 option 1.

Please note, that you must be an OnSIP customer with at least a pre-paid PSTN balance to make calls.

For more information on OnSIP + Odoo click here.

OnSIP can be integrated with the Odoo CRM application by using the following documentation:

https://www.odoo.com/documentation/17.0/applications/general/voip/onsip.html 

Notes:

• OnSIP is United States based, to bill with OnSIP you will need a credit card with a United States address.
• Every open Odoo tab will create another active registration. Be sure to close all unused tabs, as registration limits can cause calls to fail if there are over 10 for a user.
• As of November 2025, Odoo has changed the registration interval to 10 minutes for tabs. If you aren't seeing the registrations expire after 10 minutes in the OnSIP administration users section, you'll need to have your Odoo database updated. Please contact Odoo for more information on upgrading your database.
• When placing calls, confirm that the Odoo interface is sending a "1" plus area code plus number, e.g. 12125551234. 
• If you are an existing Odoo customer, you need to upgrade to version 19.  If you are a new customer, you will start on version 19. (Older versions of Odoo have an issue with registration intervals lasting an hour, if multiple Odoo tabs are open this can cause issues with OnSIP registrations - if you have this symptom please make sure you are on version 19). 

Check out our Blog about Odoo Integration.