Can't get the 8961 to register to the CUCM 8.6. The 7941 registered without a problem. We verified that we correctly entered the MAC Address. Our 8961 can reach the TFTP server and get its TFTP file.
The usual issue when SIP phones do not register is when there is no line configured on the device. SIP phones require a line number to be configured if they are not auto registering because the phone has to learn of it's directory number from the TFTP config file so that it knows what to put in the SIP REGISTER message. Double check that there is a line set on the device in CUCM and if there's not add one and the phone should register.
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