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SIP NOTIFY fails intermittently

Employee#1
Occasional Contributor

SIP NOTIFY fails intermittently

I have a VVX 500 hangset running 5.2.2.x. The device is setup to monitor a few parking spaces. The SIP subscriptions all go to a UAS which is also responsible for sending the SIP NOTIFY's to device. On any given subscription, I can send the device NOTIFY after NOTIFY to update the status of the parking space on the device; and the device always responds with a 200.

 

Every now and then however, a NOTIFY will have no impact on the device's parking space status, even though the device responds with a 200. That is, the icon does not change, and any further NOTIFY fails to change the state. Only after the device creates a new subscription, does it start to behave as expected.

 

I've turned on SIP debug logs on the device, and I've noticed this:

Successful notify's usually have similar log details after a response to the notify:

1701201313|sip |2|00|CCallNoCall::Notified full dialog-info 1 of 1 version rx 23 local 22
1701201313|sip |2|00|CCallNoCall::Notified full dialog-info 1 set call state m_nVersion to 23

 

Where as an unsuccesful notify has this:

1701201313|sip  |2|00|CCallNoCall::Notified full dialog-info num 1 version rx 24 local -1

 

It appears like the 'version' value (e.g. 23, 24) included in the notify message body is not found locally on the last request. Would this imply that the dialog no longer exists?

Message 1 of 7
6 REPLIES 6
SteffenBaierUK
Polycom Employee & Community Manager

Re: SIP NOTIFY fails intermittently

Hello Employee#1,

welcome to the Polycom Community.

The first step should be installing a currently supported software version.

 

UC Software 5.5.1 or UC Software 5.4.5 and then re-test.


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

----------------
The title Poly Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.

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

Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
Message 2 of 7
Employee#1
Occasional Contributor

Re: SIP NOTIFY fails intermittently

I upgaded to 5.5.1.11526 but am still seeing similar issues.

 

The debug logs have the following after the first failed NOTIFY. Any ideas?

1701211204|sip  |1|00|Dialog 'ps02c4ba8b8e1' State 'Trying'->'Terminated'
1701211204|sip  |2|00|CCallNoCall::Notified full dialog-info num 1 version rx 22 local -1
1701211205|sip  |2|00|CCallNoCall::TimeOut500ms: TimerN fired. End the Subscription

 

Message 3 of 7
SteffenBaierUK
Polycom Employee & Community Manager

Re: SIP NOTIFY fails intermittently

Hello Employee#1,

I would need to see a wireshark trace and know what kind of SIP server you are using but this requires a ticket.

In order to raise a support ticket you need to work with your Polycom reseller as they need to do this for you.

If this is some sort of an Internet discounter please post your phone's MAC address so I can look up who would be able to support you.

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

----------------
The title Poly Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.

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

Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
Message 4 of 7
Employee#1
Occasional Contributor

Re: SIP NOTIFY fails intermittently

Ok, I'll see what I can do with respect to creating a ticket.

 

On a side-note, what is TimerN ?

 

Thanks

Message 5 of 7
SteffenBaierUK
Polycom Employee & Community Manager

Re: SIP NOTIFY fails intermittently

Hello Employee#1,

I am unable to find any information on this.

 

Please go ahead and work with your reseller.

Best Regards

Steffen Baier

Polycom Global Services

----------------
The title Poly Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.

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

Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
Message 6 of 7
Employee#1
Occasional Contributor

Re: SIP NOTIFY fails intermittently

Turns out that the UAS was not sending an immediate NOTIFY after the 200 response. We added this (with a neutral state) and it resolved the issue.

Message 7 of 7