Device Mobility Issue/Missunderstanding?!

[Pascal Blumenthal]

Hi folks

I like to use Device Mobility for all IP Phones and I have a question about an possible issue or a missunderstanding from my side.

We have for example:

Site A, all phones are registered on subscriber A:
IP: 10.20.30.0/24
Device Pool A with CUCM Group, Region, Location, Physical Location, Device Mobility Group and Device Mobility CSS etc.

Site B with ip phones registered on subscriber B:
IP: 192.168.30.0/24
Device Pool B with CUCM Group, Region, Location, Physical Location, Device Mobility Group and Device Mobility CSS etc.

Now, my question is, if a phone from site A moves to site B, the phones get's another IP and the CUCM put this phone
into the Device Pool B. But why the phone registers still to the subscriber A? I assume it should register to subscriber B
as the phone is now at site B where all phones are registered to subscriber B.

We have CUCM version 10.5.2 SU2

Any help and suggestions are very welcome. Thank you very much.

Kind regards,

Pascal

[Rob Huffman · Accepted solution]

Hi Pascal,

Not all settings change when using Device Mobility, this tip from a good Cisco doc description explains what you are seeing;

Tip Cisco Unified Communications Manager always uses the Communications Manager Group setting from the phone record.The device always registers to its home location Cisco Unified Communications Manager server even when roaming. When a phone is roaming, only network location settings such as bandwidth allocation, media resource allocation, region configuration, and AAR group get changed.

From;

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/8_6_1/ccmfeat/fsgd-861-cm/fsdevmob.html#wp1088546

Cheers!

Rob

[Pascal Blumenthal]

Hi Rob

Sh.., I never paid attention to this Tip.

Maybe you have an idea how I can share the load on different subscribers within one big building and different ip subnets on each floor.

The goal is to let's say to register all phones from floor one and two to subscriber A and floor three and four to subscriber B, the phones from floor five and six to subscriber C etc.

I know I can configure multiple Device Pool's but what happens if teams move between different floors? I'm looking for a full automatic solution.

Any idea or suggestion?

Thank you for your help.

Regards,

Pascal