To connect a telephone line:
- Connect one end of the phone cable to the Tel1 (Voice) port on the rear panel of the modem router.
- Connect the other end of the phone cable to the telephone.
- Call Comcast XFINITY customer service at 1-800-XFINITY (1-800-934-6489) or 1-855-OK-BEGIN and ask them to register the phone lines.
The Tel (Voice) LED blinks while the phone is being registered and then lights solid white.
After the voice line is registered, you can hear a dial tone when the phone is off-hook.
Last Updated:07/07/2025
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Article ID: 000038530