HT-704 ATA Adapter for PBX Systems

The Grandstream HT-704 Adapter is designed for reseller customers offering VoIP analog conversion for traditional PBX phone systems. Many features such as Call Waiting and Call Transfer offered for use with the Grandstream HT-701 or Grandstream HT-702 adapters are disabled on the Grandstream HT-704. If you have questions please contact the Helix Telecom Sales Department for assistance.

How do I program my Grandstream HT-704 adapter for use with Helix Telecom service?