Hello & Welcome to Just Answer,
Sorry to hear of the issue you are having with your phones.
To help you with this issue, may I ask:
1) What phone service provider (phone company) you have for this phone line?
2) Can you DESCRIBE this interruption of the conversation - when this occurs?
3) Are you able to "switch" to the new caller - when this interruption occurs?
I see it has been a few days and I just wanted to follow up to see if you have any more questions concerning this issue or if the issue was resolved.
I look forward to any further questions or results that you may have.
Thanks, ***** *****--. .-(im)