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Calls dropping at 37 Seconds
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norbi Offline
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Post: #1
Calls dropping at 37 Seconds
We have been diagnosing and troubleshooting our W52P for the past few months. Originally, we were having issues with the base reseting & constantly syncronizing. Working with our VOIP provider, we have replaced and tried various equipment.

We are currently running with a new base, upgraded internet speed (50mbp+), new router (AC1900). There are no ping issues, all pings under 100ms.

Calls seem to drop at exactly 37 seconds quite frequently. Not necessarily drop, but the phone will show we are connected but we do not hear the other party.

Base Firmware: 25.73.0.72 (Autoprovisioned by VOIP)
Handset Firmware: 26.73.017

Based on other threads, I also have these settings:
Keep alive type: Default
UDP Keep Alive Interval: 30

My AC1900 has SIP ALG disabled, as well as priority set for the W52P
(This post was last modified: 11-15-2016 07:26 PM by norbi.)
11-15-2016 07:07 PM
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complex1 Offline
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Post: #2
RE: Calls dropping at 37 Seconds
Hi,

This is typically a router issue.
Lower the keep-alive Interval time. Default is 30 sec, change it to 20 sec.
Setting can be found in “Account > AccountX > Advanced”
If this not helps then open/forward in the router the RTP port range 11780-12780 (UDP)

Why are you use these “strange” firmware versions and not who are recommended by Yealink? (25.73.0.40/26.73.0.30)

Kind regards,
Frank.

I am not an employee of Yealink.
Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
11-15-2016 08:06 PM
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norbi Offline
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Post: #3
RE: Calls dropping at 37 Seconds
I have adjusted the Keep Alive time.

The firmware configuration is what 8x8 is using with auto-provision, I can't answer it beyond that.

Adjusted to 15 seconds, still dropping calls at 37 seconds.

Added all the UDP Port ranges you suggest to open & prioritize, including the suggestions by 8x8.
(This post was last modified: 11-15-2016 09:06 PM by norbi.)
11-15-2016 08:14 PM
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norbi Offline
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Post: #4
RE: Calls dropping at 37 Seconds
I have spent the past 1 hour on the phone with 8x8, debugging every setting on the router. We are still experieincing the dropped calls. Keep Alive has been adjusted to 15 seconds.

I have attached the syslog level 6, and the PCAP which should have captured the event of the dropped call.


Attached File(s)
.pcap  25.73.0.72_22_4_50.pcap (Size: 900.23 KB / Downloads: 1)
.tar  syslog.tar (Size: 27 KB / Downloads: 1)
(This post was last modified: 11-16-2016 01:13 AM by norbi.)
11-15-2016 11:05 PM
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complex1 Offline
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Post: #5
RE: Calls dropping at 37 Seconds
Hi,

What you can try is open/forward in the router the SIP port you are using to the W52P.

Kind regards,
Frank.

I am not an employee of Yealink.
Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
11-16-2016 12:53 PM
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norbi Offline
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Post: #6
RE: Calls dropping at 37 Seconds
(11-16-2016 12:53 PM)complex1 Wrote:  Hi,

What you can try is open/forward in the router the SIP port you are using to the W52P.

I have already tried that, all ports are on top priority by the modem.
11-16-2016 06:03 PM
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complex1 Offline
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Post: #7
RE: Calls dropping at 37 Seconds
Hi,

Last thing (I am out of suggestions) and before I am going to say “Try a different router” try use a public STUN server for the W52P.
e.g. stun.sipgate.net, stun.counterpath.net, stun.fwdnet.net, etc.

Kind regards,
Frank.

I am not an employee of Yealink.
Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
11-16-2016 06:27 PM
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norbi Offline
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Post: #8
RE: Calls dropping at 37 Seconds
(11-16-2016 06:27 PM)complex1 Wrote:  Hi,

Last thing (I am out of suggestions) and before I am going to say “Try a different router” try use a public STUN server for the W52P.
e.g. stun.sipgate.net, stun.counterpath.net, stun.fwdnet.net, etc.

I hooked it up directly to my ARRIS Surfboard, and still dropping.
11-16-2016 06:57 PM
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complex1 Offline
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Posts: 1,299
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Post: #9
RE: Calls dropping at 37 Seconds
Send a PM.

Kind regards,
Frank.

I am not an employee of Yealink.
Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
11-16-2016 08:43 PM
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Travis_Yealink Offline
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Joined: Mar 2016
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Post: #10
RE: Calls dropping at 37 Seconds
(11-15-2016 07:07 PM)norbi Wrote:  We have been diagnosing and troubleshooting our W52P for the past few months. Originally, we were having issues with the base reseting & constantly syncronizing. Working with our VOIP provider, we have replaced and tried various equipment.

We are currently running with a new base, upgraded internet speed (50mbp+), new router (AC1900). There are no ping issues, all pings under 100ms.

Calls seem to drop at exactly 37 seconds quite frequently. Not necessarily drop, but the phone will show we are connected but we do not hear the other party.

Base Firmware: 25.73.0.72 (Autoprovisioned by VOIP)
Handset Firmware: 26.73.017

Based on other threads, I also have these settings:
Keep alive type: Default
UDP Keep Alive Interval: 30

My AC1900 has SIP ALG disabled, as well as priority set for the W52P

Hi,

This is Travis.

For this issue, would you please tell me :
1. how many Yealink phones do you have? what kinds of types are them?
2. how many phones have the same issue?
these info will help us to identify your issue class.

please kindly offer us trace files for further analysis as below:
a. Level 6 syslog
b. PCAP trace
c. Config.bin
You can get the guide from this link to see how to export the issue data:
http://support.yealink.com/faq/faqInfo?id=311

BR
Travis
11-28-2016 01:00 AM
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