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CCE - inbound with no audio and outbound is failing RRS feed

  • Question

  • Hi,

    We have two CCE -HA per PSTN, we have made inbound test calls and there is no audio when the call is answered and outbound  external phone is not working. 

    Below logs is for outbound call  (not working) from client. 

    SIP/2.0 503 Service Unavailable

    ms-user-logon-data: RemoteUser
    Authentication-Info: TLS-DSK qop="auth", opaque="E70E78F1", srand="B0898BF7", snum="33", rspauth="4acc42add18c34f4605bcd20cf40dd704a2919f3", targetname="BLU2A05FES12.infra.lync.com", realm="SIP Communications Service", version=4
    Via: SIP/2.0/TLS 192.168.31.125:51130;received=10.5.17.254;ms-received-port=10401;ms-received-cid=9B08A00
    CONTENT-LENGTH: 0
    From: "xxx, xx"<sip:xxx.xxx@test.com>;tag=bd608bf05f;epid=6d90e8af76
    To: <sip:+65xxxxxxx@test.com;user=phone>;epid=B436EFF8D9;tag=33879ab3cf
    CSeq: 1 INVITE
    Call-ID: 55dbf3098d464a78af78de84230e65ed
    Server: RTCC/6.0.0.0 CCE-MediationServer
    ms-endpoint-location-data: NetworkScope;ms-media-location-type=intranet
    ms-trunking-peer-state: down
    ms-trunking-peer: 10.184.xxx.x
    ms-diagnostics: 10001;source="Mediation-.sfbhybrid.local";reason="Gateway did not respond in a timely manner (timeout)";component="MediationServer"
    ms-diagnostics-public: 10001;reason="Gateway did not respond in a timely manner (timeout)";component="MediationServer"
    ms-telemetry-id: AEEF9EC9-C969-549E-9A35-FC7004DBF5EE
    ms-split-domain-info: ms-traffic-type=SplitIntra;ms-remote-fqdn=apsingapore01.jdpa.com

    Appreciate your help..

    Regards,
    MadhuSri


    • Edited by MadhuSri011 Saturday, November 18, 2017 10:04 AM
    Saturday, November 18, 2017 9:51 AM

Answers

  • Hi MadhuSri011,

    There is Outbound Call flow with CCE

    1.Users dial an external PSTN number in E.164 format

    2.SIP traffic routes to Skype for Business online infrastructure

    3.SfB online performs a reverse number lookup for the dialed number

    4.The RNL fails because it is an external number and doesn’t belongs to any SfB user

    5.The call is routed to the Edge component of CCE

    6.If the PSTN routes exist Edge Server relays the traffic through Mediation component of CCE

    7.Mediation component sends the traffic to the PSTN gateway and establish a connection between the user end point and PSTN Gateway through Mediation component for media flow

    Based on your log,I think you error was happened in the step7 :.Mediation component sends the traffic to the PSTN gateway and establish a connection between the user end point and PSTN Gateway through Mediation component for media flow.First check the connection of Cisco voice gateway with mediation server,if the connection is correct,please check the Cisco voice gateway setting,such as the routting and sip trunk configuration.


    Regards,

    Leon Lu


    Please remember to mark the replies as answers if they helped.
    If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    • Marked as answer by MadhuSri011 Thursday, November 23, 2017 10:45 PM
    Tuesday, November 21, 2017 9:49 AM

All replies

  • Hi,

    Which type of gateway do you use?

    Looks like the gateway did not answer on the invite from the mediation server.


    regards Holger Technical Specialist UC

    Saturday, November 18, 2017 1:35 PM
  • Cisco voice gateway...  anything i need to check?
    Saturday, November 18, 2017 2:36 PM
  • Hi MadhuSri011,

    There is Outbound Call flow with CCE

    1.Users dial an external PSTN number in E.164 format

    2.SIP traffic routes to Skype for Business online infrastructure

    3.SfB online performs a reverse number lookup for the dialed number

    4.The RNL fails because it is an external number and doesn’t belongs to any SfB user

    5.The call is routed to the Edge component of CCE

    6.If the PSTN routes exist Edge Server relays the traffic through Mediation component of CCE

    7.Mediation component sends the traffic to the PSTN gateway and establish a connection between the user end point and PSTN Gateway through Mediation component for media flow

    Based on your log,I think you error was happened in the step7 :.Mediation component sends the traffic to the PSTN gateway and establish a connection between the user end point and PSTN Gateway through Mediation component for media flow.First check the connection of Cisco voice gateway with mediation server,if the connection is correct,please check the Cisco voice gateway setting,such as the routting and sip trunk configuration.


    Regards,

    Leon Lu


    Please remember to mark the replies as answers if they helped.
    If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    • Marked as answer by MadhuSri011 Thursday, November 23, 2017 10:45 PM
    Tuesday, November 21, 2017 9:49 AM
  • Thank you Leon,

    We had an issue with the network in all the locations,  finally it started working.

    Thank you so much for the quick help.

    Regards,
    MS

    Friday, November 24, 2017 10:22 PM
  • You are welcome

    Regards,

    Leon Lu


    Please remember to mark the replies as answers if they helped.
    If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Monday, November 27, 2017 1:21 AM