What does the HT812 ATA actually do for my business?
The HT812 lets you connect your existing analog phones and fax machines to a modern VoIP phone system. This means you can keep using the hardware you already own while gaining the cost savings and features of internet-based calling.
Can we keep our current phone numbers when using it?
Yes. Ooma can usually port your business numbers into VoIP. The ATA ensures those calls still ring on your old desk phones or fax machines.
Is this reliable enough for business calls?
- Yes. The HT812 has:
- Dual FXS ports (for 2 analog phones or fax machines)
- Dual Gigabit Ethernet ports for fast, stable connections
- Failover SIP servers to maintain service if one provider connection fails
- This makes it reliable enough for SMBs who need phones to “just work."
Does it support faxing?
Yes. The HT812 supports T.38 Fax-over-IP as well as traditional fax passthrough. This means most modern VoIP services will still support fax machines connected to the adapter.
Do we need special wiring or IT expertise to install it?
Not at all. You simply plug your analog phone/fax into the ATA’s FXS ports and connect the ATA to your internet router. Most VoIP providers support auto-provisioning, so setup is largely plug-and-play.
What size of business is this best for?
- The HT812 is best suited for small offices, retail shops, medical/dental practices, and SMBs that still use:
- A few analog phones (2–4 lines max)
- Fax machines
- Alarm or POS lines that require analog connectivity
Can it grow with my business?
Yes, but with limits. The HT812 is perfect for transitional or hybrid setups. If you’re adding many more users or moving fully to IP desk phones, you may want to pair it with VoIP phones or a hosted PBX system.
Will our call quality be good?
Yes. It supports HD voice codecs (Opus, G.729, G.711, G.722, etc.) and has built-in jitter buffer and echo cancellation. This helps deliver crystal-clear calls, even on busy internet connections.
What happens if the power or internet goes out?
- Like most ATAs, the HT812 requires both internet and power to function. To protect against downtime, many SMBs use:
- Battery backups (UPS) for power outages
- Failover to mobile phones
