This OID stores an integer representing the timeout in seconds for waiting on a connect or disconnect message after receiving a Call Proceeding signal; expiration causes the call to be terminated. Network engineers adjust this to handle slow networks or busy endpoints; too short causes legitimate calls to fail, too long wastes resources on hung calls. Example: setting to 8 seconds means the device expects a connect message within 8 seconds of receiving Call Proceeding, or the call is dropped.