[Serusers] SUBSCRIBE response (200) does not include Expires header

I'm starting to use the pa module, and noticed that when it gets a SUBSCRIBE, the 200 response doesn't have an expires header, as it should. (RFC 3265, 3.1.1) SUBSCRIBE sip:vmail@192.168.0.5 SIP/2.0 Via: SIP/2.0/UDP voipdev3.zoom.com:33050;rport From: <sip:8100100@192.168.0.5:5060>;tag=a67e989d-13c4-173-5ac26-24be To: <sip:vmail@192.168.0.5> CSeq: 1 SUBSCRIBE Call-ID: b5bb80-a67e989d-13c4-173-5ac26-5440 Expires: 3600 Event: presence Max-Forwards: 70 Supported: replaces Contact: <sip:8100100@192.168.0.5:5060> Content-Length: 0 SIP/2.0 200 OK Via: SIP/2.0/UDP voipdev3.zoom.com:33050;rport=33050;received=192.168.0.10 From: <sip:8100100@192.168.0.5:5060>;tag=a67e989d-13c4-173-5ac26-24be To: <sip:vmail@192.168.0.5>;tag=92462461b2a59d6c6be4b5af5841f077-b62f CSeq: 1 SUBSCRIBE Call-ID: b5bb80-a67e989d-13c4-173-5ac26-5440 Content-Length: 0 I haven't spent a lot of time looking at the code for pa, but should this be an easy thing to fix? Thanks, -- Doug