I know the Comcast XB6 modems have an external battery backup but I’m wondering if the Arris T25 has an “official” battery backup. Doesn’t have a slot but I’m wondering if Arris makes an external battery backup for the unit. Lost power due to Isaias and cellular reception was spotty at first so I’m looking for battery backups for Comcast Digital Voice as a backup. I do have corded phones in the house.
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