Roaming within seperate Locations (DECT R4)

[kirchenlo]

Hello,

Maybe someone of you can help me out.
I have a customer with a large campus.We are running DECT R4 on that campus with different Airsync regions. I noticed that roaming is not working between the sync regions.
Let’s say we have two Airsync regions 1 and 2. When I move with the DECT Handset from SyncRegion 1 to SyncRegion 2 the call is not roaming to the other SyncRegion.
Is this a normal behavior or is it a problem?
I need to separate the into two regions as the campus is divide by a road and I could not get enough signal strength on the other side of the road to sync to the other base station.
Regards,
Lothar

[markgallagher]

You can't roam between different air sync regions. The user would have to perform an action such as parking the call just before they cross the road and then unparking it when back in range of the other air sync region. [If your installation used the IP Office provisioned method then the handset has park and unpark options in the Call Services menu]

However, that's unpractical especially as it requires users to anticipate when they are about to go out of range/come back into range of the different sync regions.

Without knowing the location, it does sound like a couple of external base stations would allow you to merge the synch regions and people could continue calls while crossing the campus. The dect signal range outside a building structure is much better.

[kirchenlo]

Hello,

thanks for that information, is this written somewhere in the documentation of DECT R4? This is what I thought already, but it would be good if I have some official sources like the DECT documentation.

Do you have an idea where I can find this info?

[markgallagher]

I've not seen it written down but its fairly easy to conclude by logic.

Base stations can air sync with a signal as low as -90dB.

A handset on the other hand starts to look for another base station with a better signal to which it can roam when the signal to its existing base station drops below -68dB. Below -75dB call quality is pretty much zero and beyond that the call is simply lost.

So if two regions are out of range for base station to base station air sync then they are well beyond the range for handset roaming.