I think that you require at least CME 4.1 to support MOH on SIP Phones;
Music on Hold for SIP Phones
In Cisco Unified CME 4.1 and later versions, the MOH feature is supported when a call is put on hold from a SIP phone and when the user of a SIP phone is put on hold by a SIP, SCCP, or POTS endpoint. The holder (party that pressed the hold key) or holdee (party who is put on hold) can be on the same Cisco Unified CME or a different Cisco Unified CME connected through a SIP trunk. MOH is also supported for call transfers and conferencing, with or without a transcoding device.
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...