CVP 7.0(2) SIP RNA Timer with CUCM Hunt Group

I have a very simple ICM 7.5(9) script which simply assigns a call type then forwards to a label on CUCM 7.1(5), which is a hunt pilot containing a hunt list with 2 line groups...a circular LG with 10 members (RNA reversion timeout of 20 sec), followed by a broadcast LG with different 10 members. There is no CFNA/CFB forwarding set up on the hunt pilot.
In CVP, the SIP RNA timer is set on for this DN at 120 seconds, and I can see that get set in CVP logs (IP addresses and dialed numbers modified to protect customer data):
41762417: 10.100.1.41: Dec 03 2012 20:23:28.977 -0500: %CVP_7_0_SIP-7-CALL: {Thrd=Pool:SIP[7059609]} Matched 666333315555551111 to proxy.customer.uc
41762418: 10.100.1.41: Dec 03 2012 20:23:28.977 -0500: %CVP_7_0_SIP-7-CALL: {Thrd=Pool:SIP[7059609]} Using Local Static Route for sip:[email protected]
41762419: 10.100.1.41: Dec 03 2012 20:23:28.977 -0500: %CVP_7_0_SIP-7-CALL: {Thrd=Pool:SIP[7059609]} Matched 666333315555551111 to TimeoutMatcher: patterns like 66633331> will use RONA of 120
41762420: 10.100.1.41: Dec 03 2012 20:23:28.977 -0500: %CVP_7_0_SIP-7-CALL: {Thrd=Pool:SIP[7059609]} CALLGUID = 0B19E39A3CE811E28B7DA21700DE4950 LEGID = 0B19E39A3CE811E28B7DA21700DE4950-135458420897716680 - [OUTBOUND]: INVITE TO <sip:[email protected];transport=udp> FROM "--CVP" <sip:[email protected]:5060> EXPIRES[120] 100REL[Unsupported]
The hunt group then begins hunting, and can be answered normally. However, a CANCEL is sent at 60 seconds, and I am not sure why:
From the gateway:
2106715: Dec  3 20:24:29.095: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Sent:
CANCEL sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 10.100.1.5:5060;branch=z9hG4bK2C171513C0
From: "--CVP" <sip:[email protected]>;tag=20687DD0-DAF
To: <sip:[email protected]>
Date: Tue, 04 Dec 2012 01:23:29 GMT
Call-ID:
[email protected]
CSeq: 101 CANCEL
Max-Forwards: 70
Timestamp: 1354584269
Reason: Q.850;cause=19
Content-Length: 0
From CUCM SDI traces:
12/03/2012 20:24:29.169 CCM|//SIP/SIPTcp/wait_SdlReadRsp: Incoming SIP TCP message from 10.100.3.30 on port 43568 index 566129 with 389 bytes:
CANCEL sip:[email protected]:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 10.100.3.30:5060;branch=z9hG4bK51cac6f4-76fb29a5-78d5dd99-9a021233-1
Call-ID: [email protected]
From: "--CVP" <sip:[email protected]:5060>;tag=ds229f1b0f
To: <sip:[email protected];transport=udp>
CSeq: 1 CANCEL
Content-Length: 0
I am trying to determine which timer is limiting the hunt to 60 seconds.
Can anyone suggest where I might begin looking?
Thanks so much!!!

I've run into a similar problem recently with a CVP 8.5(1) SIP deployment and have found in the CVP documentation that the RNA Timeout is a range configurable between 5 and 60 seconds.
You can enter a larger value through OAMP on the Call Server-->SIP-->Advanced Configuration tab but when you Save and Deploy, it reverts back to the max of 60 seconds. The CVP help file indicates the 5-60 second range.
Regards,
Matt

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