Solved: Hi,

Suchi · ‎09-24-2016

Hi,

I want to upgrade UCM 10.5.1 to 10.5.2 & lots of phones are in branches over the WAN. I have 79XX (7942) & 8945 phones, how do i minimize the WAN utilization , waht is the best practice for this kind of situation?

Thanks

Suchi

mohamed helmy · ‎09-24-2016

Hello Suchi,

I had a similar situation where the customer did not want to do firmware upgrade with the CUCM upgrade.

Before Upgrade

switch all phones to DP where they are not registered with the Pub.
At CUCM go to Device> Device Setting> Device Default
locate your phone type SIP or SCCP
Copy the name for default firmware version which this type of phones use by default. Save if in notepad.

Do the upgrade for the Pub

After upgrade

go to the same path Device> Device Setting> Device Default
locate the new file name for the firmware used with your name. copy and save the file to a notepad.
change the new file name for your phones model to the one you saved before the upgrade.
switch the phone to the DP using the Pub, and the phones will reboot and won't do firmware upgrade.
do the upgrade to the remaining CUCM nodes.

change the phones' DP to their original ones before upgrade.

Now all your phones still with the old firmware. and your cluster got upgraded.

if you want to upgrade them, but not all at once to save your WAN bandwidth :

change the name at device default to the new one "you saved after the upgrade"
Restart the phones. one by one, 10 by 10 or the best way to you.
Phones will get the new firmware.

Regards.

Mohamed Helmy

Regards, Mohamed Helmy

View solution in original post

mohamed helmy · ‎09-24-2016

Hello Suchi,

I had a similar situation where the customer did not want to do firmware upgrade with the CUCM upgrade.

Before Upgrade

switch all phones to DP where they are not registered with the Pub.
At CUCM go to Device> Device Setting> Device Default
locate your phone type SIP or SCCP
Copy the name for default firmware version which this type of phones use by default. Save if in notepad.

Do the upgrade for the Pub

After upgrade

go to the same path Device> Device Setting> Device Default
locate the new file name for the firmware used with your name. copy and save the file to a notepad.
change the new file name for your phones model to the one you saved before the upgrade.
switch the phone to the DP using the Pub, and the phones will reboot and won't do firmware upgrade.
do the upgrade to the remaining CUCM nodes.

change the phones' DP to their original ones before upgrade.

Now all your phones still with the old firmware. and your cluster got upgraded.

if you want to upgrade them, but not all at once to save your WAN bandwidth :

change the name at device default to the new one "you saved after the upgrade"
Restart the phones. one by one, 10 by 10 or the best way to you.
Phones will get the new firmware.

Regards.

Mohamed Helmy

Regards, Mohamed Helmy

Jaime Valencia · ‎09-24-2016

If/when you want to upgrade, you can also consider peer firmware sharing, or setting a local TFTP server for the FW files.

HTH

java

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Aseem Anand · ‎09-24-2016

Hi,

The best would be to first upgrade the phones on the new firmware as per 10.5.2 by setting up a local TFTP server. I have tested it using TFTPD32 in lab and it works.

While upgrading you need to make sure that you distribute the Phones to the servers using appropriate call manager group.

Aseem

UCM upgrade from 10.5.1 to 10.5.2