CUCM upgrade procedure

[Ajin Skariah]

Hello,

Can someone brief me the steps to update call manger publisher and subscriber. I have 11.0 version now and I want to upgrade to 11.5. As per my knowledge first upgrade the publisher, reboot, register all the phones to publisher server and then upgrade subscriber and reboot. Please correct me if I'm wrong.

Thanks,

Ajin.

[Abhay Singh Reyal · Accepted solution]

Find the below link helpful 

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/upgrade/11_5_1/cucm_b_upgrade-guide-cucm-115/cucm_b_upgrade-guide-cucm-115_chapter_010010.html

It provides you the sequence and best method to perform the upgrade.

HTH

Regards

Abhay

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[Ajin Skariah]

Thank you Abhay...