Lync calls routing wrongly

Hi All,
I'm sorted of stumped at the moment.
The Scenario :
Lync 2013 deployment
Client has 4 sites - the sites are connected via vpn tunnels and has firewalls at each site.
User calls form site D to Site C and they experience one way audio. User calls from site C to site D and the call is fine.
User calls from site A to site C and the call is fine. User calls from site C to site A and one way audio might occur. User calls from site a to site D and there is one way audio. User calls from site D to site A and call is fine.
Devices uses - vvx410 phones.
Problem - can't see QoE on reporting as the vvx phones don't provide it.
So over to logging it seems that calls from site D is trying to come form the internal ip of the edge server's private ip to the user in site C. So it seems that during the call setup that UDP to UDP peer to peer is not happening and then uses the edge server
to route the call through. No at site D hairpinning on the edge server is not allowed. From sites A-C it seems that the call is hairpinning via the edge's public ip as that is allowed.
There are firewall restrictions in place between the sites and what the client tried was to open full ip to ip on the phones between the sites as that should in theory allow UDP to UDP, but that does not seem to happen.
Could this be a routing issue between the sites? We have booked a network engineer and firewall engineer to troubleshoot this issue. On the lync side I've not restricted any ports.
Will be greay if someone had this issue before.
Regards
Danie

Hi Greg/Anthony
Thanks for your replies so far.
The Lync setup consists only out of 1 Lync Edge server and 4 Lync Standard Edition server that is spread across the WAN. The lync static route to the inside nic does cover 172.18.0.0, in which all the subnets between all the sites are covered. The vvx phones
are located in a voice vlan (we recently had a issue with vvx phones losing their ip addresses and got the network engineer to reconfig the one site to create smaller subnets and then the issue was traced to 4 3COM switches). Their used to be only one voice
vlan, which is still the case at 3 sites, but the one site has quite a few voice vlans now to cater for all the subnets that were created, but I don't think this is the root of the problem. The one unfortunate thing is that on the lync reporting server you
can't see any QoE info apart from when a call is made from a vvx to a cx600 phone and usually when it is cross site the report will show that the vvx phone is coming from the external private ip of the lync edge servers AV nic. Today I did ask the client to
test by doing a lync to lync call, but since they are remote I can't foresure say that they did it correctly as the one user had a cx600 connected to his desktop and I wanted them just to use headsets and make the lync calls - I will get to try that out next
week when we will be at the client with a FW and network engineer to troubleshoot.
I also used the centralized logging tool in lync, but I don't seem to be able to locate the section where it shows the final candidate paring for a particular call, so I can't verify what the final candidate paring is. I can however see the initial candidate.
From the vvx410 phone is always uses a 22** port on UDP as the 1st candidate - I'm not sure if that is a fault as I would expect it to be in the 50,000 - 59,999 range as that is what the firewall engineer is seeing on his side.
I will also be able to do a wireshark trace - we have a port mirrored permanently on the one switch for the one user.
The main issue here is that there does not seem to be a peer to peer udp connection between the clients, so the edge server should never come into play here as the clients are inside the same WAN, alltough they are separated by 2 firewalls between 2 sites,
but connected via a vpn tunnel between the 2 firewalls.
Lync calls from the internet is working without any issues by the way.
Regards
Danie

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http://www.microsoft.com/en-us/download/details.aspx?id=39968
Please remember, if you see a post that helped you please click "Vote As Helpful" and if it answered your question please click "Mark As Answer".
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This forum post is based upon my personal experience and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

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***Don't forget to mark helpful or answer***

The traffic is getting to the front end server as I monitored SIP stack on the front end and got this from the log after initiating the call request...
TL_INFO(TF_PROTOCOL) [1]131C.2280::05/15/2014-15:41:51.239.00000020 (SIPStack,SIPAdminLog::ProtocolRecord::Flush:ProtocolRecord.cpp(265))[4195629786]
$$begin_record
Trace-Correlation-Id: 4195629786
Instance-Id: 30A7
Direction: outgoing
Peer: 10.1.5.98:58292
Message-Type: request
Start-Line: INVITE sip:10.1.5.98:58292;transport=tls;ms-opaque=69ab187213;ms-received-cid=15400 SIP/2.0
From: "Mitch King"<sip:[email protected]>;tag=de00273c69;epid=0bf6878c0e
To: <sip:[email protected]>;epid=2c737c11a8
Call-ID: e5bf68f84e0643839d3fc3524bf0a925
CSeq: 1 INVITE
Contact: <sip:[email protected];opaque=user:epid:K2EhWwgpmFyEPyRPWajS8wAA;gruu>
Via: SIP/2.0/TLS 10.1.3.106:5061;branch=z9hG4bKEAAC5ABA.63098DB96B0459CF;branched=FALSE;ms-internal-info="ccNiK2JF2ymTwz69iEJ-Koh9KulADFeojTs5M7Oy7Yteq5jQljcydysgAA"
Via: SIP/2.0/TLS 172.16.4.5:49216;branch=z9hG4bK0A64EEE1.72E873C44EADB9CF;branched=FALSE;ms-received-port=49216;ms-received-cid=14D00
Via: SIP/2.0/TLS 172.20.10.7:49185;received=213.205.233.99;ms-received-port=47938;ms-received-cid=1500
Record-Route: <sip:JNBSKV06.domain.co.uk:5061;transport=tls;opaque=state:T:F:Ci.R15400;lr;ms-route-sig=fas5y5A_Hi8kKMcMSekbcP058TEzxR0PC0fCKvEXCZO8S5jQljkAzQcAAA>;tag=A4CC2A746138BB8B2479B24FCDD3009C
Max-Forwards: 68
Content-Length: 4662
Content-Type: multipart/alternative;boundary="----=_NextPart_000_001F_01CF705C.920384C0"
Message-Body: ------=_NextPart_000_001F_01CF705C.920384C0
Content-Type: application/sdp
Content-Transfer-Encoding: 7bit
Content-ID: <[email protected]>
Content-Dis; handling=optional; ms-proxy-2007fallback
v=0
o=- 0 0 IN IP4 181.39.65.34
s=session
c=IN IP4 181.39.65.34
b=CT:99980
t=0 0
m=audio 59182 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
a=candidate:RbmFhQT26e8jfmCHHNDiiSm4NNjv3BrThjDipLYc9fQ 1 lW66uiImb0jhBi7NTpWyFg UDP 0.830 172.20.10.7 12252
a=candidate:RbmFhQT26e8jfmCHHNDiiSm4NNjv3BrThjDipLYc9fQ 2 lW66uiImb0jhBi7NTpWyFg UDP 0.830 172.20.10.7 12253
a=candidate:a1v6y+uA7x0DXU+4yO610jGEhZlHstMX+bFcj3G9/JY 1 iLWi/RPFsw/i/z5MX2n6+w TCP 0.190 181.39.65.34 54566
a=candidate:a1v6y+uA7x0DXU+4yO610jGEhZlHstMX+bFcj3G9/JY 2 iLWi/RPFsw/i/z5MX2n6+w TCP 0.190 181.39.65.34 54566
a=candidate:lJEokTFI5l/qLQ4yb72D2US/uQtgJN9F5UNNlN+wsYU 1 5iW2Mv+VRFVMpZVS6glc6Q UDP 0.490 181.39.65.34 59182
a=candidate:lJEokTFI5l/qLQ4yb72D2US/uQtgJN9F5UNNlN+wsYU 2 5iW2Mv+VRFVMpZVS6glc6Q UDP 0.490 181.39.65.34 51845
a=candidate:u2uHk5L+RctPvbqIA6asJAT5h0kjBj0L06I8bKwUr9I 1 6y3UI2Y5SmfiROa+dCxgDA TCP 0.250 213.205.233.99 10012
a=candidate:u2uHk5L+RctPvbqIA6asJAT5h0kjBj0L06I8bKwUr9I 2 6y3UI2Y5SmfiROa+dCxgDA TCP 0.250 213.205.233.99 10012
a=candidate:WawePotOSAKzTE3UjFxrFaULbrWoKE+8azhkahUlBvQ 1 L0TZQvD2nRP1kIR6SFEbMQ UDP 0.550 213.205.233.99 10015
a=candidate:WawePotOSAKzTE3UjFxrFaULbrWoKE+8azhkahUlBvQ 2 L0TZQvD2nRP1kIR6SFEbMQ UDP 0.550 213.205.233.99 10016
a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:gtklU/YbidFvHH7yktIG1IgAJYmdEQfpOKCbhs1t|2^31|1:1
a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:dKGa1f82DCYMtzMzQFYr/c2HYvpWHCkkSSBZTDzw|2^31|1:1
a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:JjNTaKZwo9xX+ebB4bXV1n+JkKDWaLk98qjfH+uB|2^31
a=maxptime:200
a=rtcp:51845
a=rtpmap:114 x-msrta/16000
a=fmtp:114 bitrate=29000
a=rtpmap:9 G722/8000
a=rtpmap:112 G7221/16000
a=fmtp:112 bitrate=24000
a=rtpmap:111 SIREN/16000
a=fmtp:111 bitrate=16000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:116 AAL2-G726-32/8000
a=rtpmap:115 x-msrta/8000
a=fmtp:115 bitrate=11800
a=rtpmap:4 G723/8000
a=rtpmap:97 RED/8000
a=rtpmap:13 CN/8000
a=rtpmap:118 CN/16000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=encryption:required
------=_NextPart_000_001F_01CF705C.920384C0
Content-Type: application/sdp
Content-Transfer-Encoding: 7bit
Content-ID: <[email protected]>
Content-Dis; handling=optional
v=0
o=- 0 0 IN IP4 181.39.65.34
s=session
c=IN IP4 181.39.65.34
b=CT:99980
t=0 0
m=audio 57869 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
a=ice-ufrag:V8SO
a=ice-pwd:cPfWCmdBZf5ok2wzZmhGw4iJ
a=candidate:1 1 UDP 2130706431 172.20.10.7 22964 typ host
a=candidate:1 2 UDP 2130705918 172.20.10.7 22965 typ host
a=candidate:2 1 TCP-PASS 6556159 181.39.65.34 50574 typ relay raddr 213.205.233.99 rport 10013
a=candidate:2 2 TCP-PASS 6556158 181.39.65.34 50574 typ relay raddr 213.205.233.99 rport 10013
a=candidate:3 1 UDP 16648703 181.39.65.34 57869 typ relay raddr 213.205.233.99 rport 10014
a=candidate:3 2 UDP 16648702 181.39.65.34 57495 typ relay raddr 213.205.233.99 rport 10017
a=candidate:4 1 UDP 1694235647 213.205.233.99 10014 typ srflx raddr 172.20.10.7 rport 20732
a=candidate:4 2 UDP 1694234110 213.205.233.99 10017 typ srflx raddr 172.20.10.7 rport 20733
a=candidate:5 1 TCP-ACT 7076351 181.39.65.34 50574 typ relay raddr 213.205.233.99 rport 10013
a=candidate:5 2 TCP-ACT 7075838 181.39.65.34 50574 typ relay raddr 213.205.233.99 rport 10013
a=candidate:6 1 TCP-ACT 1684797439 213.205.233.99 10013 typ srflx raddr 172.20.10.7 rport 25165
a=candidate:6 2 TCP-ACT 1684796926 213.205.233.99 10013 typ srflx raddr 172.20.10.7 rport 25165
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a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:JjNTaKZwo9xX+ebB4bXV1n+JkKDWaLk98qjfH+uB|2^31
a=maxptime:200
a=rtcp:57495
a=rtpmap:114 x-msrta/16000
a=fmtp:114 bitrate=29000
a=rtpmap:9 G722/8000
a=rtpmap:112 G7221/16000
a=fmtp:112 bitrate=24000
a=rtpmap:111 SIREN/16000
a=fmtp:111 bitrate=16000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:116 AAL2-G726-32/8000
a=rtpmap:115 x-msrta/8000
a=fmtp:115 bitrate=11800
a=rtpmap:4 G723/8000
a=rtpmap:97 RED/8000
a=rtpmap:13 CN/8000
a=rtpmap:118 CN/16000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=encryption:required
------=_NextPart_000_001F_01CF705C.920384C0--
$$end_record
***Don't forget to mark helpful or answer***

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<Email Edited by Host>

These are user-to-user forums, you are not talking to Apple here - I've asked the hosts to remove your email address from your post.
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Prior to configuration optimization, you need to ensure you have sufficient wireless coverage (20% overlap) & preferably clients are connecting in 5GHz band. This design guide cover most of topics (Voice, QoS, Multicast,etc) & read it thoroughly to see whether your wireless deployment adheres to those recommendation.
http://www.cisco.com/en/US/docs/solutions/Enterprise/Mobility/emob73dg/emob73.html
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http://mrncciew.com/2012/12/02/understanding-wireless-qos-part-3/
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http://mrncciew.com/2013/07/30/wmm-qos-profile/
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- WLC connected switchoport : CoS
- inter switch trunks : DSCP
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http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a0080c01d2c.shtml
5. If you are using AVC, better you mark up this traffic as EF, so your wired network will properly treat this traffic as Voice. Otherwiese this traffic will treat as video & will not get required priority within your network.
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HTH
Rasika
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Join conference via Lync call rather than Call Me At

We have deployed Lync Server 2013 and are just beginning to deploy it in small doses to portions of the organization. We are using a combination of Lync 2010 and 2013 for clients. This post is regarding the Lync 2013 client.
We use Lync with Cisco telephony via Remote Call Control. We do have PC-to-PC calling enabled in addition to RCC (the Telephony setting in Lync Control Panel on the user accounts is "Remote Call Control"). We are not using Enterprise
Voice.
After deploying Lync as simply an IM + telephony client, we have begun to focus on rolling out the web conferencing functionality. In doing so, we have noticed strange behavior which I describe below.
Let us assume that someone other than me creates web conference by selecting two people, including me, in their Lync contacts list in the client, right clicks, and selects "Start a conference all" and then chooses "Lync call". I
see a Lync toast notification appear, inviting me to a conference. It says the conference organizer's name and says "Conference Call". If I click the toast to accept the conference, my Cisco telephone extension immediately begins to ring.
In the meantime, in the Lync conference in the client I see "Join Conference Call" and "Other". If I answer answer my telephone extension or push the Join Conference Call button, I am successfully joined to the Lync audio conference
and can speak with anyone else that joined the conference, whether they are using Lync audio or Cisco telephony.
The problem is that there are cases where we want to do a video conference. I am aware that can only be done if using Lync audio rather than the Cisco telephony. I can disconnect from the conference call by hanging up my Cisco extension.
When I do so, the Lync conference in the client shows a notification that gives me the option to rejoin the conference. The "Rejoin" button has a down arrow, and if I expand it I can select "Rejoin using Lync Call" and if I do that
I can now see others' webcams and can share my own webcam with the conference.
My question is: how can I elect to join the conference in the first place with a Lync call rather than having the Lync conference bridge dial my Cisco extension? There does not seem to be a way to do this that we can get to work. For instance,
I mentioned that after I have clicked the Lync toast notification after being added to the conference and my Cisco phone begins ringing that I see the options "Join Conference Call" and "Other" in Lync client. If I open the Other
options, I see "Join using Lync Call" as an option. If I select that option, my Cisco phone answers the call and I am joined to the Lync audio conference with my Cisco phone and not Lync audio.
Please note that I already checked the Phone section in the Lync 2013 client options and the box "Before I join meetings, ask which audio device I want to use" is checked and the "Join meeting audio" drop-down box is set to "Lync".

Sorry, I misread your question and now see that I did not pre-emptively answer it. I just tested it and unchecked the box "Before I join meetings, ask which audio device I want to use" and made sure "Join meeting audio" was set to "Lync". Even
after doing so, the behavior is the same: the Cisco phone automatically rings and any action to join the conference results in the Cisco phone extension being picked up.
Basically, it seems that if you use that "Start a Conference Call" option from the Lync contacts list, the Lync preferences set in the recipients' Lync clients are ignored. If you schedule a Lync conference via Outlook or people use the Lync meeting
URL in their Internet browser, it does respect the preferences correctly. It seems like it might be a bug.
I would be interested if any other Lync Server 2013 users with Lync client 2013 and using RCC could repeat my tests and see if they have the same issue.

Lync call goes on hold when I touch the mouse or keyboard

Hi
I have an issue when I am on a lync call that if I touch the keyboard or mouse the call is put on hold. Very frustrating and I can find nothing about it. Anyone else encountered this issue, or better still have a resolution?
Lync 2013 is being used.
Thanks
Steve

Hi,
Did the issue happen only for you or for multiple users?
You can test the issue on other computer Lync client with your Lync account.
Please delete user profile on your local computer with the following path:
%UserProfile%\AppData\Local\Microsoft\Office\15.0\Lync
And check if Lync client update to the latest version, if not, update Lync client and then test again.
Best Regards,
Eason Huang
Eason Huang
TechNet Community Support

Lync calls routing wrongly

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