Hello & Welcome to Just Answer,
I'm Greg and will do my best to assist you today.
Sorry I didn't see your question earlier and to hear of any issue you are having with your phones.
To help you with this issue, may I ask:
1) When you say "cuts off", does that mean that the call is "dropped", and you hear a dial tone, or does something else happens.
2) How many TOTAL cordless handsets do you have with this system, and if more than one, do ALL handsets have this same symptom?
3) What phone service provider (phone company) you have for this phone line?
4) If you have ANY other devices (NOT part of the Panasonic system) attached to this same phone line and if so, are they working properly?
Please REPLY using the box below.