Netvanta 7100 Transfer to External Number Fails

Many SIP Service Providers will reject a call from an unknown number, that is, a number not registered to their switch – Problems can occur when a user on the NetVanta 7000 forwards their phone to an external number – When the user locally forwards their phone, the original calling party information will be preserved and sent in the From header of the SIP INVITE back out to the provider’s softswitch

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