Extension Mobility Failover mode

Question

CCM 4.1(3)
We discovered yesterday during failover testing that Extension Mobility does not function when CCM PUB is down. When pressing the services button on the phone the message "Requesting" displays, and the services menu does not populate. Is this an expected loss of functionality with the PUB down or does this sound like a Configuration problem? EM functions normally with the PUB on line. Thanks

Answer 1

There is no failover for EM in 4.1(3)
There are some features and functions that require access to the master database on the publisher because they make modifications to records and therefore need write access. The publisher is the only server in a Cisco CallManager cluster that has a read and write configuration database. The main features and functions that require access to the publisher for write access include:
?Configuration additions, changes, and deletions
?Extension Mobility
?User speed dials
?Cisco CallManager User page options requiring the database
?Cisco CallManager software upgrades
?Call Forward All changes
?Message Waiting Indicator (MWI) state
Other services or applications might also be affected, and their ability to function without the publisher should be verified when deployed.
http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_implementation_design_guide_chapter09186a0080447510.html#wp1045103
Regarding the services, the URL may be pointing to the PUB, and HTTP request are sent to PUB.For this you need to create a DNS entry which responds to this request no matter if Primary server is offline.
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