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Home > ThinkTel Support > Troubleshooting > Dropped Calls > Calls drop 15 minutes into call
Calls drop 15 minutes into call
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If you are a SIP trunk client and are dropping audio in your call after approximately 15 minutes, you may not be responding to the SIP re-INVITE. Our switch performs a SIP re-INVITE every 15 minutes for any active calls in your SIP Trunk. It's a way of checking if the call is indeed still active. If an appropriate 200 OK is not received back, we disconnect the call.

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