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Linkus No Audio on Local Network

Jozen

January 09, 2019 06:59

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Hi!

I need some help regarding the connection of Linkus Mobile Client on our Yeastar S100

Linkus client on mobile can login to Linkus Server and make calls on LAN IP Phone but when you answer the call there is no Audio.

Any idea about this issue?

Thanks Guys!

S100 Firmware Version is 30.7.0.27

Linkus Server Version is up to date

Linkus Mobile Client is up to date

 

 

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19 comments

• 0
  
  Jozen January 09, 2019 07:12

  Here's a pcap log for reference thanks.

  ------------------------

   

  BYE sip:873@10.0.200.5:5060 SIP/2.0
  Via: SIP/2.0/UDP 10.0.200.171:5060;branch=z9hG4bK-852d2fa7
  From: "Ed" <sip:871@10.0.200.5>;tag=a0da2a31b344f743o0
  To: "873" <sip:873@10.0.200.5>;tag=ed8b8dcd-7045-4cd4-9736-ed0eb7ae1120
  Call-ID: 677bbf49-6c9ea50b@10.0.200.171
  CSeq: 103 BYE
  Max-Forwards: 70
  Authorization: Digest username="871",realm="YSAsterisk",nonce="1547012422/248e03d37f3665ee33460c284257808d",uri="sip:873@10.0.200.5:5060",algorithm=MD5,response="ccf30465e59fbe7e5dd5b8d1277047a4",opaque="6ce884355b96b804",qop=auth,nc=00000002,cnonce="f868946a"
  User-Agent: Cisco/SPA525G2-7.4.7
  Content-Length: 0

  U‰5\t{ € € @U9¢‘tôµIñá E`r><@ @V.
  È
  È«ÄÄ^ŒÀSIP/2.0 200 OK
  Via: SIP/2.0/UDP 10.0.200.171:5060;received=10.0.200.171;branch=z9hG4bK-852d2fa7
  Call-ID: 677bbf49-6c9ea50b@10.0.200.171
  From: "Ed" <sip:871@10.0.200.5>;tag=a0da2a31b344f743o0
  To: "873" <sip:873@10.0.200.5>;tag=ed8b8dcd-7045-4cd4-9736-ed0eb7ae1120
  CSeq: 103 BYE
  Server: Yeastar S100-30.7.0.27
  Content-Length: 0

  U‰5\ŽŒ õ õ IûBôµIñá E`炇@ @V5
  È
  ƒäÄ ÓTBBYE sip:873@10.0.131.228:5152;linkus SIP/2.0
  Via: SIP/2.0/UDP 10.0.200.5:5060;rport;branch=z9hG4bKPj9d92a46d-1da3-4e43-a849-0dd88bf62341
  From: "Jozen" <sip:871@10.0.200.5>;tag=36044081-ce1f-498f-ab2b-f47be2d70752
  To: <sip:873@10.0.131.228;linkus>;tag=60ecb255-6a8a-4df9-bbf1-bb0781591d4c
  Call-ID: 7bcc5787-04d5-4c5b-8dca-f05e19f827d5
  CSeq: 22858 BYE
  Reason: Q.850;cause=16
  Max-Forwards: 70
  User-Agent: Yeastar S100-30.7.0.27
  Content-Length: 0

  U‰5\¡ ¢ ¢ ôµIñá IûB E ”Û£@ ?þË
  Ċ
  È Ä€ôBSIP/2.0 200 OK
  Via: SIP/2.0/UDP 10.0.200.5:5060;rport=5060;received=10.0.200.5;branch=z9hG4bKPj9d92a46d-1da3-4e43-a849-0dd88bf62341
  Call-ID: 7bcc5787-04d5-4c5b-8dca-f05e19f827d5
  From: "Jozen" <sip:871@10.0.200.5>;tag=36044081-ce1f-498f-ab2b-f47be2d70752
  To: <sip:873@10.0.131.228;linkus>;tag=60ecb255-6a8a-4df9-bbf1-bb0781591d4c
  CSeq: 22858 BYE
  Content-Length: 0

• 0
  
  Larry Neblett January 09, 2019 12:17

  The pcap is not complete as the Contact and Connection headers are missing. These are the critical ones as they tell the receiving device what IP and port to use when communicating back to the other end. Do the capture from the S100 and post the file. 

• 0
  
  Jozen January 10, 2019 00:47

  Thanks Larry

  Linkus to Linkus extension is working fine but for Linkus to IP Phone there is no audio.

   

• 0
  
  Larry Neblett January 10, 2019 01:04

  please send the pcap file so I can use the tools to analyze. 

• 0
  
  Jozen January 10, 2019 01:09

  Here's the pcap tar file

  https://drive.google.com/open?id=1Syv-WjYbxW-84OWGf3tl7tr2d38NXa20 

• 0
  
  Larry Neblett January 10, 2019 02:43

  Can you show a screen shot of the linkus settings and the SIP NAT settings?

   

  What I see is that the 525 and the Spbx are on 1 subnet and the Linkus is on another, 

• 0
  
  Jozen January 10, 2019 02:52

  Here's the setup of Linkus and SIP NAT

  

• 0
  
  Oscar Colka January 10, 2019 07:32

  The SIP session seems fine and the S20 receive both IP phone and Linkus's RTP stream. See below screenshot:

  

   

  Try call from Linkus to Linkus and see if the voice works fine or not. If Linkus call to Linkus works fine, it probably caused by the DSP hardware issue. Get system logs and post here to confirm. (It is better to reboot the device and get the system logs, in order to make sure the hardware logs will not be over wrote)

• 0
  
  Jozen January 10, 2019 07:58

  Hi Oscar

  Linkus to Linkus voice is working fine.

  Linkus to IP Phone the RTP is not connecting

  

   

  Here's the screenshot of Linkus to Linkus Call

  

• 0
  
  Jozen January 10, 2019 08:02

  I will also post the system logs 

  Thanks

• 1
  
  Larry Neblett January 10, 2019 09:51

  Hey Oscar, the trace is not fine. you are correct in that the PBX is receiving the streams, but the PBX is not transcoding and relaying the stream from one device to the other.  So, you assumption about the DSP may very well be correct. 

   

  Can you reach voice mail (*2 default) on the S20 from Linkus and hear the prompts? Can you call another extension from Linkus and leave a voice mail and then retreive same by hearing the voice. 

   

  From the screen shot, it appears that the expectation is that the there is no external communication expected with any device which would include the use of SIP providers, unless there is an on-premise SBC. Is this correct?

• 0
  
  Jozen January 10, 2019 10:29

  Hello Larry

  From Linkus, I can reach the voice mail on the PBX but there is no audio.

  Also from Linkus leaving a voice mail to IP Phone extension, its not working and there is no record of the voice mail

   

• 0
  
  Larry Neblett January 10, 2019 10:44

  As an aside, what codecs are set in the SIP settings? I am going to assume that ilbc is enabled, as otherwise the PBX should have responded with a 488 response, but just to be safe, please check. Also, can you confirm the firmware version of the pbx and also see if the Linkus app is up to date?

   

  I assume you can get to Voice mail from the Cisco and hear the voice? 

• 0
  
  Oscar Colka January 10, 2019 13:23

  Larry, yes, the PBX is not transcoding and relaying the stream from one device to the other.

  As I know, there is a DSP inside the PBX, which used to encode and decode the iLbc. I have one customer that has similar issue and finally, with Yeastar support team's help, they confirm it is the DSP issue. But we need the system logs to confirm. 

   

  Jozen, do you work with a Yeastar distributor or Yeastar directly as a distributor? I would suggest you to try with another S PBX, if you have.  : )

  Or I would suggest you to submit a ticket and ask Yeastar support team to confirm it is hardware issue or not.

• 0
  
  Jozen January 11, 2019 00:55

  Hi Guys,

   

  Yes Larry ilbc codec is enabled, Voice Mail is working fine in IP Phone extension

  Here's the information of our PBX

  Yeastar S100 Firmware Version is 30.7.0.27

  Linkus Server Version is up to date

  Linkus Mobile Client is up to date

   

  I still not contact the local distributor regarding this issue Oscar, I think the device was purchased abroad.

  here's the link for system logs.

  https://drive.google.com/open?id=1-Eh4o6Te4xjyma_RzK2ptHZh8TwDQddH 

  Thanks Guys.

   

• 0
  
  Oscar Colka January 11, 2019 01:20

  Unfortunately, there is not hardware logs inside the system logs.

  Can you try login via SSH and get dmesg logs?

  See here for the guide how to login SSH: 

  https://support.yeastar.com/hc/en-us/articles/115004259608-How-to-Log-in-SSH-of-Yeastar-S-Series-VoIP-PBX

  After you login successfully, execute command dmesg

  

  After that, save the logs into a file and post a download link here.

• 0
  
  Jozen January 11, 2019 01:41

  Here's the dmesg logs.

  https://drive.google.com/open?id=11HedaSkEhbEUt8yxQwiuzTYBGs4GMmJe 

   

   

• 1
  
  Oscar Colka January 11, 2019 02:01

  See the last part of the dmesg message, the USB 2 is disconnect many times, I believe there is issue with the DSP hardware. I can confirm this is an hardware problem.

• 0
  
  Jozen January 15, 2019 04:49

  Hi Guys,

  I coordinate with Yeastar support regarding this issue and they confirmed that the problem is indeed the onboard DSP Module of the device.

  Thanks.