Helix Telecom has begun a infrastructure modernization project in August, 2026. Documentation, links, instructions and processes related to provisioning equipment, customer portal, voicemail portal, ticket management, SMS, MMS, Fax, softphones, email communications may be incomplete or inaccurate. If you need updated documentation please sign into your account at https://fixmyphonesystem.com and submit a support ticket for assistance.
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?