Hi,
CME 9.5 does not support 88XX series IP phones, you should upgrade to CME 11.x
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/requirements/guide/cme115spc.html
The Cisco ISR G2 comes with a 60-day evaluation license. After 60 days, the license changes to “right to use”. The customer is required to pay for the CME-SRST feature license which is valid for 12 years.
http://www.cisco.com/c/en/us/td/docs/routers/access/sw_activation/SA_on_ISR.html#pgfId-1204791
So, an upgrade will not require you to get a new license.
Manish
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