Support Category

AT&T Office@Hand Integration

Setup and operational guidance for AT&T Office@Hand deployments.

Articles

AT&T Office@Hand Integration answers

Open an article for the full answer, setup detail, and related resources.

What is AT&T Office@Hand? A cloud VoIP and collaboration service powered by RingCentral.

Why use DT-200A for Office@Hand? It supports VoLTE which is required for the service.

Can DT-200D use Office@Hand? No — it is data-only and lacks VoLTE voice.

How to set voicemail? Line ▶ LTE ▶ Voice Mail Number.

How to set call forwarding? Through Office@Hand portal → My Extension → Call Handling & Forwarding.

How to configure auto-attendant? Admin Portal → Phone System → Auto Receptionist.

Can DT-200A use 4G for Office@Hand? Yes — VoLTE or LTE data ensures stable calling.

Can it use Wi-Fi fallback? Yes — if Wi-Fi is enabled in settings.

Where to see call history? View Call Log on the phone or Office@Hand portal.

Does it support TLS security? Yes — enable TLS under Transport Protocol.

Frontier IoT Network

Wire Less, Connect More.

Modernize business communication with cellular-first voice devices, UCaaS readiness, and operator-friendly deployment support.

Talk to an Expert Place an Order