We have agents who are 'on-call' outside normal business hours. During this time, if our customers call they need to take a call "Over the Phone". We are using Twilio as a telephony service.

Before going home, the on-call agent sets their status to Online and Over the Phone, before shutting down their computer. Immediately after shutting down, the Agent remains Online and calls are successfully re-directed to his cellphone. However, after a period of time he is automatically moved to Offline. They could be away from their computer for 2 days, but still need to be contactable by phone and therefore must remain Online.

Is there a way to disable this auto sign-out function?