IP DECT R4 phone can receive calls but can't make them

[damascus9]

Hi, I just installed a new DECT R4 IPBS2 station across the street from my working DECT system and my 3720 phone can only receive calls but cannot make calls. I have this new station set up as Master Air Sync mode, Sync region 1. It is registered with the master station. Audio is very clear when I call it. But when I try to make a call from this phone while in the same building with the new base station, I don't hear ringback and the call doesn't show up in System Monitor or System Status. I do get an RTP error in Diagnostics/Events (no media data received) and an H323 error (signalling timeout). When I walk across the street where the Master base station is I can make and receive calls.

Anyone experience any problems like this? I have extra SARI certificates so I could make this base station a master but I really want to be able to walk back and forth between buildings and have the phone work in both places.

Thanks for looking.

 

[intrigrant]

Go near the base station, power cycle the phone and see what happens.

 

[tlpeter]

Could it be to close to the other basestations(s) so that it needs to be in the same region?
You cannot have a different region if the phone can reach the other region!

BAZINGA!

I'm not insane, my mother had me tested!

 

[damascus9]

The region could be the problem. The new base station is across the street, about 500' away. I'll try reprogramming it as a slave in the same region. If I do it this way would the phone work in both buildings, but just not hop to the next base station to get the strongest signal? Guess I'll find out tomorrow.

 

[damascus9]

I'm back on-site now, I power-cycled the phone while I was next to the base station and this didn't affect anything.

I made the new base station a slave like all the others this resulted in the phone being completely nonoperational. It was searching for the master station and it lost its synchronization with the master.

Lastly, I put the new base station back into Region I and I can receive calls again but can't make them. Looking at Diagnostics/Events I am getting H323 Signalling Timeout errors when I try to call from this phone. I get ping replies from the new station to the master and the new station is in sync with the master.

 

[NYSTECH]

Look at you Dect line. If you have allow Direct media Path checked uncheck it. I had something similar awhile back and this resolved it.

 

[damascus9]

Thanks NYSTECH, I had Direct Media Path unchecked already. I've got Wireshark installed on my management PC. I have no idea how to use it but I will capture all the traffic hitting my IPBS2 and try to figure it out. Seems like it has to be a network/NAT issue.

 

[NYSTECH]

Does the slave base station show synced with Master?

 

[damascus9]

Yes, it is synched when I put it in a different region. Not synched when they are in the same region.

 

[damascus9]

Here's the Air Sync tab on the Master

 

[damascus9]

And here are all the devices registered. The one with the one way audio is called "Vista Annex" and is in a different subnet.

 

[damascus9]

Hey Guys,

This issue has been resolved. I removed the IP DECT line from the IP Office control unit located in the same subnet with the new IBPS2 station, then power-cycled the bast station. After the base station came back up, which took a little longer than usual, I was able to make and receive calls.

In a nutshell, the IP DECT line built in the remote IP Office not only is not needed but actually prevented the DECT phone from working properly.