Obihai OBI200 Setup

What You'll Need

• Obihai OBI200 (or OBI202 for two phone ports)
• Ethernet cable (usually included)
• Phone cable (RJ11, usually included with your fax machine)
• Your fax machine
• A computer on the same network

Step 1: Connect the Hardware

1. Plug the ethernet cable from your router into the Internet port on the OBI200
2. Connect your fax machine's phone cable to the Phone port on the OBI200
3. Plug in the power adapter
4. Wait for all LEDs to stabilize (about 60 seconds)

Step 2: Find the Device's IP Address

You need to access the OBI200's web interface. First, find its IP address.

1. Pick up your fax machine's handset (or any phone connected to the OBI200)
2. Press *** (three stars)
3. Press 1 for device status
4. The device will read out its IP address (e.g., "192.168.1.110")
5. Write this down - you'll need it for the next step

Step 3: Access the Web Interface

1. On your computer, open a web browser
2. Type the IP address from Step 2 into the address bar (e.g., http://192.168.1.110)
3. You'll see the OBi Device Configuration page
4. No login is required by default

Note: If prompted for login, try username: admin, password: admin

Step 4: Configure the SIP Service

1. Click Voice Services in the left menu
2. Click SP1 Service (Service Provider 1)
3. Find the SIP section and fill in:

4. Find the Credentials section:

5. Set X_ServProvProfile to A

Step 5: Optimize for Fax

These settings help fax transmissions work reliably.

1. In the left menu, go to Physical Interfaces → Phone1 Port
2. Find and adjust these settings:

Also in the Voice Services → SP1 Service section:

Step 6: Save and Reboot

1. Click Submit at the bottom of the page
2. Go to System Management in the left menu
3. Click Reboot
4. Wait about 90 seconds for the device to restart
5. The Service LED should turn solid green when registered

Troubleshooting

Service LED is blinking or off

Registration failed. Double-check your SIP credentials are entered exactly as shown. Make sure X_ServProvProfile is set to "A".

Faxes fail partway through

Try setting FAXCodec to "G711u" instead of "T38". Some fax machines work better without T.38.

Can't access web interface

Make sure your computer is on the same network as the OBI200. Try http://obi.local as an alternative.

Forgot the password

Factory reset: Press and hold the reset button for 20 seconds. All settings will be reset to defaults.

"Service Provider X" vs SP1

The OBI200 can connect to multiple services. We use SP1 (Service Provider 1) for faxsimile. Ignore the other slots.