We have recently expanded our company into a neighboring building. Internet connectivity between buildings is active and we're almost 95% sure that our internet connection is not losing it's connection (TWC is currently monitoring but do not worry about this aspect).
We installed a new KX-TDA0470 on our existing system and had it configured. Our PBX card is in building 1 and our IP phones are in building 2. Our Cisco POE switch is connected to the phones through a patch panel and then into the LAN port on the phone. The IP phone model is KX-NT321.
Every morning we come into work, the phones in building 2 are online but there is no dial tone. After disconnecting the phone from the LAN and reconnecting, the phone regains it's dial tone.
Aside from the possible connection dropping, my question is what kind of other troubleshooting can be done to correct this issue? Is it possible that the phones are going into some sleep mode? Does the switch need to be configured to not let the phones go into sleep mode?
Any additional information is extremely helpful. Thanks.