I have a panasonic KX-TD1232 dual cabinet.

[panatek]

The system lost communication between the 2 cabinets. what chould be the problem
What can I do.

 

[obtsystems]

It could be the inter connect cable or card

Are extensions working on both cabinets but can't call between systems
If so are the extension numbers correct across both systems

Try turning off both cabinets. Then turn on the master first then the slave and leave for 10 minutes

 

[Coastline]

I have had to disconnect all C.O. and station cables from the cabinets in order to get them to link. An off hook or incoming call interrupts the process.