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Does anyone know how to stop CUBE sending sdp in response to OPTIONS

Hello everyone,

I wondered if anyone knows how to stop CUBE responding to SIP OPTIONS requests with SDP included please? 

The CUBE by default seems to respond to options pings with its SDP capabilities as follows:

SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.10.10.10:5060;
From: <sip:10.10.10.10>;
To: <sip:192.168.100.2>;
Date: Thu, 18 May 2017 15:54:32 GMT
Call-ID: 26441-3704108072-697762@whatever
Server: Cisco-SIPGateway/IOS-15.5.3.S5
CSeq: 1 OPTIONS
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
Allow-Events: telephone-event
Accept: application/sdp
Supported: 100rel,timer,resource-priority,replaces,sdp-anat
Content-Type: application/sdp
Content-Length: 375
v=0
o=CiscoSystemsSIP-GW-UserAgent 3827 8341 IN IP4 192.168.100.2
s=SIP Call
c=IN IP4 192.168.100.2
t=0 0
m=audio 0 RTP/AVP 18 0 8 9 4 2 15
c=IN IP4 192.168.100.2
m=image 0 udptl t38
c=IN IP4 192.168.100.2
a=T38FaxVersion:0
a=T38MaxBitRate:9600
a=T38FaxRateManagement:transferredTCF
a=T38FaxMaxBuffer:200
a=T38FaxMaxDatagram:320
a=T38FaxUdpEC:t38UDPRedundancy

CUCM doesn't do this it just responds with a simple 200OK as follows

Received:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.30.10.50:5060;branch=z9hG4bK306BBD6
From: <sip:10.30.10.50>;tag=5742D3E-BA0
To: <sip:10.30.10.12>;tag=550373230
Date: Thu, 18 May 2017 14:55:17 GMT
Call-ID: D7642511-3B1011E7-BE99A17C-F0BB0273@10.30.10.50
Server: Cisco-CUCM11.5
CSeq: 101 OPTIONS
Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY
Content-Length: 0

Also the ITSP I use responds with a simple 200 OK. Any way to force CUBE to do the same?

Thanks

Lee. 

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