Single 7942 trying to download SIP load instead of SCCP after CUCM upgrade

[lisacoody]

I recently upgraded CUCM from version 11.0 to 11.5; afterwards, all of our phones upgraded just fine except one. On the display it shows that it's trying to download a SIP load instead of SCCP. I've reset the phone several times using both 123456789*0# and 3491672850*# and tried every load available on Cisco's software page from 8.3.3 to 9.4.2.1 (on a separate network) with no luck. The phone is stuck in a reboot loop:

upgrading 00:21:d8:ba:14:b8 (the phone's mac address)

term42.default

jar42sip.9-4-2ES26.sbn

cnu42.9-4-2ES26.sbn

apps42.9-4-2ES26.sbn

dsp42.9-4-2ES26.sbn

cvm42sip.9-4-2ES26.sbn

reboot

I've done a packet capture and I never see the phone requesting the XMLDefault.cnf.xml file. Does anyone have suggestions?

Thanks in advance!

Lisa

[Mohammed al Baqari]

Do you use domain name or IP address for CUCM servers? If you use domain
name make sure that phones can resolve the domain name of the cucm nodes

[lisacoody]

Hi Mohammed,

Thanks for taking the time to reply to my question - I appreciate your suggestion! Our CUCM deployment uses IP addresses to connect. All other phones upgraded and are registered to Call Manager except this one. 

Lisa