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The HP Community is where owners of HP products, like you, volunteer to help each other find solutions.
HP Recommended

Hi Gurus,

 

I've a strange issue on one of my site where Polycom can't connect to skype for businness servers successfully.

Skype client on desktop users are working on the other hand.

From the log, I see that the polycom is correctly contacting servers and that TLS Handshake is successful, but then the connection is stuck into 'Request Path Settings/lyncSignInStatus'.

 

Anyone has an idea where I should look for to resolve this issue ?

 

Thanks & Best Regards,

Jean-Christophe

3 REPLIES 3
HP Recommended

Hello @Jean-Christophe,

welcome to the Polycom Community.

It is always good to tell us about the actual Polycom device and the software that is being used but as you work for one of our Partners and I could find the info in the log it is OK.

 

This Trio running UC Software 5.5.3 simply never gets an answer from the Skype server:

 

0501151628|sipt |0|00|>>>>>>>> REG[1] Data Sent to TCP 10.41.1.32:5061
0501151628|sipt |0|00|    REGISTER sip:tagaviation.com;transport=tls SIP/2.0
0501151628|sipt |0|00|    Via: SIP/2.0/TLS 10.36.11.16;branch=z9hG4bKc02a5ed67B9A688
0501151628|sipt |0|00|    From: "Room_MLA_Board_Room1" <sip:Room_MLA_Board_Room1@tagaviation.com>;tag=A9BC6846-CC1747E2;epid=64167f3d47c4
0501151628|sipt |0|00|    To: <sip:Room_MLA_Board_Room1@tagaviation.com>
0501151628|sipt |0|00|    CSeq: 1 REGISTER
0501151628|sipt |0|00|    Call-ID: d60bc8dbf0c41804f6228b249c3d47c4
0501151628|sipt |0|00|    Contact: <sip:Room_MLA_Board_Room1@10.36.11.16;transport=tls>;methods="INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER, BENOTIFY";proxy=replace;+sip.instance="<urn:uuid:06fd3749-3213-5107-817e-93ada1c84c4d>"
0501151628|sipt |0|00|    User-Agent: Polycom/5.5.3.3517 PolycomRealPresenceTrio-Trio_8800-UA/5.5.3.3517
0501151628|sipt |0|00|    Accept-Language: en
0501151628|sipt |0|00|    Ms-device-info: MAC=64-16-7F-3D-47-C4, vendor=POLYCOM, version=PolycomRealPresenceTrio-Trio_8800-5.5.3.3517
0501151628|sipt |0|00|    ms-keep-alive: UAC;hop-hop=yes
0501151628|sipt |0|00|    Supported: msrtc-event-categories,adhoclist,ms-cluster-failover,ms-userservices-state-notification,gruu-10,gruu
0501151628|sipt |0|00|    Event: registration
0501151628|sipt |0|00|    ms-subnet: 10.36.11.0
0501151628|sipt |0|00|    Max-Forwards: 70
0501151628|sipt |0|00|    Content-Length: 0
0501151628|sipt |0|00|    
0501151628|sipt |0|00|>>>>>>>> REG End of data sent

 

32 seconds later we create:

 

0501151700|sip  |3|00|CTrans::TimeOut500ms Self Generated 480 Response


Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services

------------------------------------------------
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.

Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN
HP Recommended

Hi Steffen,

 

I noticed this also.

The thing I don't understand is why does skype client from users desktop connecting from the same subnet to the same servers receive an answer and why Polycom devices acting as a Skype for Business client don't ?

 

Best Regards,

Jean-Christophe

HP Recommended

Hello @Jean-Christophe,

I would suggest you start with a wireshark trace.


Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services

------------------------------------------------
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.

Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the <a href="https://www8.hp.com/us/en/terms-of-use.html" class="udrlinesmall">Terms of Use</a> and <a href="/t5/custom/page/page-id/hp.rulespage" class="udrlinesmall"> Rules of Participation</a>.