Lync Front End Standard with Lync Edge across 2 DMZs.
All Federation with partners works great, presence and IM.
Adding PIC connectivity and all I get is 504 errors.
I have been through the provisioning some time ago and had confirmation. I can telnet into the edge/front end back and forth on 5061 and outbound from the external edge to federation.messenger.msn.com
Meetings and dialin works. I am using TMG as a reverse proxy. SIP inspection is off on my hardware firewall.
I am at a loss now....
Here is the 504 error from the logs:
TL_INFO(TF_PROTOCOL) [0]0738.0AD0::08/07/2013-08:23:47.205.0000c9cd (SIPStack,SIPAdminLog::TraceProtocolRecord:SIPAdminLog.cpp(125))$$begin_record
Trace-Correlation-Id: 1082938809
Instance-Id: 00008A5D
Direction: incoming;source="external edge";destination="internal edge"
Peer: federation.messenger.msn.com:5061
Message-Type: response
Start-Line: SIP/2.0 504 Server time-out
From: "MyName"<sip:my.name@mysipdomain>;tag=81477811df;epid=8613c43f05
To: <sip:MyOutlookName@outlook.com>;tag=8AB80487F342B2CE5B12D59B1B150C7B
CSeq: 1 INVITE
Call-ID: cfb9d628e17f42aea42017abba190224
Via: SIP/2.0/TLS 192.168.4.20:49157;branch=z9hG4bK7BAB2746.22A22F5E9CCDB593;branched=FALSE;ms-internal-info="djlTaNILYYq-aWjCztZi-pVkKxihxUBTSA7PWTfeL8GI9eL6IiWTCcagAA";received=134.170.96.31;ms-received-port=49157;ms-received-cid=8F01C00
Via: SIP/2.0/TLS 10.99.99.125:49201;branch=z9hG4bKE980734C.4E81800A5EB2C593;branched=FALSE;ms-received-port=49201;ms-received-cid=40300
Via: SIP/2.0/TLS 10.250.250.250:49451;ms-received-port=49451;ms-received-cid=4E4F00
Server: RTC/5.0
Content-Length: 0
Message-Body:
$$end_record