[cisco-voip] Device Registration via MRA and CMG Failover

[Anthony Holloway]

*Setup*
Single Expressway-E (X8.7)
Single Expressway-C (X8.7)
CUCM Pub (11.0)
CUCM Sub (11.0)
CMG Sub > Pub

*Execute*
All desk phones and soft-phones are currently registered to CUCM Sub
Drop CUCM Sub for maintenance
All desk phones and soft-phones unregister and stay this way
Switch CMG to Pub > Sub
All desk phones and soft-phones register to CUCM Pub

According to the Jabber 11.8 deployment guide, there is a table which says
failover/high availability is not yet supported for audio/video.

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/11_8/cjab_b_planning-guide-jabber-118/cjab_b_planning-guide-jabber-118_chapter_010.html#CJAB_RF_S96EC4E9_00

None of the 7800/8800/DX/Expressway/MRA documentation states that this is
unsupported, however, I may just be over looking it.

Can anyone help me find that info, or have some personal experience to
share?

Thanks.
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