Does the switch need to support SIP re-INVITEs?

There is a 15 minute SIP session timer set on all incoming traffic which means that Switch2Voip will send a SIP re-INVITE to the switch 15 minutes into the call. Please make sure that the switch is allowing SIP re-INVITEs. If unsure how to enable SIP re-INIVEs on a specific switch, please reach out to the vendor.

ADD CREDITS TO VOIP ACCOUNT