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Question about uaCSTA support on SoundPoint 650

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Member

Question about uaCSTA support on SoundPoint 650

Administrator’s Guide for the Polycom® SoundPoint® IP/SoundStation® IP/ VVX™ Family declare on uaCSTA support in page B9, B10 as following:

 

Third Party Call Control

The phone is compliant with “Using CSTA for SIP Phone User Agents (uaCSTA), ECMA TR/087” for the Answer Call, Hold Call, and Retrieve Call functions and “Services for Computer Supported Telecommunications Applications Phase III”, ECMA – 269 for the Conference Call function.

 

I enabled this feature according to this document and send HoldCall command through PBX. But nothing happened, not any response from soundpoint 650.

 

Is there anybody else ever successed on this feature? Any example sip message for it?

Any clue and response are welcomed!  thanks ahead.

Message 1 of 5
4 REPLIES 4
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Polycom Employee & Community Manager

Re: Question about uaCSTA support on SoundPoint 650

Hello JustinJia,

welcome to the Polycom Community.

I have moved your post here.

 

The definition of the support for TR-087 is as follows:

 

“The application creates an application session by establishing a SIP dialog with the user agent using a SIP INVITE method that includes a Content-Disposition header indicating “signal” and "handling=required" to mandate support for the application/csta+xml MIME type”

 

This means:

 

  • Our Phones reply with Accept: application/sdp,application/csta+xml when receiving an Invite containing Accept: application/sdp,application/csta+xml or Accept: application/csta+xml or no Accept.

  • Our Phones send the Invite with Accept: application/sdp,application/csta+xml

Before SIP version 3.1.3 a valid license was needed in order to utilize this functionality and the development and support for this was based on a interoperability partner of ours.

 

I suggest you run a wireshark trace on a spanned port and check if the invite from your yet unknown SIP server matches the above and ensure you are running a current software on the phone.

 

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 Polycom 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. My official "day" Job is 3rd Level support at Poly but I am unable to provide official support via the community.

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

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 5
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Member

Re: Question about uaCSTA support on SoundPoint 650

Thanks for the helpful response. I change code and test again. The following is new result:

 

1, PBX receive the register message and we can see "Accept: application/csta+xml"

REGISTER sip:10.40.1.46:5060 SIP/2.0
Via: SIP/2.0/UDP 10.40.0.66:5060;branch=z9hG4bK52bb29689E684F87
From: "Bill" <sip:1001@10.40.1.46>;tag=A95F9EE-5E09A02D
To: <sip:1001@10.40.1.46>
CSeq: 11 REGISTER
Call-ID: 4c941eca-e0e64449-6f552b18@10.40.0.66
Contact: <sip:1001@10.40.0.66:5060>;methods="INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER"
User-Agent: PolycomSoundPointIP-SPIP_560-UA/3.2.7.0198
Accept-Language: en
Accept: application/csta+xml
Max-Forwards: 70
Expires: 90
Content-Length: 0

 

2. Use a stand alone application to send Invite to polycom phone, receive response of "415 Unsupported Media Type".

App send to phone

INVITE sip:1001@10.40.1.46 SIP/2.0
Via: SIP/2.0/UDP 10.40.1.160:5060;branch=z9hG4bK5b4efb0eE62D2009
From: <sip:app1@10.40.1.160>;tag=57F788FC-38E829C7
To: <sip:1001@10.40.1.46>
Call-ID: 6a1dabb0-96cb4659-a991921a
User-Agent: LocalPC
Contact: <app1@10.40.1.160>
Allow: INVITE, ACK, CANCEL, BYE, INFO, OPTIONS, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER
Accept: application/csta+xml
Max-Forwards: 70
CSeq: 1 INVITE
Expires: 90
Content-Type: application/csta+xml
Content-Disposition: signal; handling=required
Content-Length: 186

<?xml version="1.0" encoding="UTF-8"?><RequestSystemStatus xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>

 

App receive from phone


SIP/2.0 415 Unsupported Media Type
Via: SIP/2.0/UDP 10.40.1.160:5060;branch=z9hG4bK5b4efb0eE62D2009
From: <sip:app1@10.40.1.160>;tag=57F788FC-38E829C7
To: "Bill" <sip:1001@10.40.1.46>;tag=80974216-764D73D5
CSeq: 1 INVITE
Call-ID: 6a1dabb0-96cb4659-a991921a
Contact: <sip:1001@10.40.0.66:5060>
User-Agent: PolycomSoundPointIP-SPIP_560-UA/3.2.7.0198
Accept-Language: en
Accept: application/csta+xml
Content-Length: 0

 

3. PBX send message to polycom phone the same message. No any response will be received.

 

According to TR-087-uaCSTA, "415 Unsupported Media Type" means phone does not support uaCSTA, but it conflict with the register message. Thanks for help again.

 

 

Message 3 of 5
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Polycom Employee & Community Manager

Re: Question about uaCSTA support on SoundPoint 650

Hello Justim,

As explained above we should reply with a application/sdp as well but I can see in your SIP message from the Polycom phone running SIP 3.2.7 that it does not.

 

I would suggest you upgrade the phone to at least UCS 3.3.5 or UCS 4.0.4 as the below software is quite old and no longer the mainstream software.

 

As explained above this was developed for a specific partner (Sylantro / BroadSoft) and I am not aware of your third party tool or your PABX. Looking at the snippet above it's most likely not supported as I cannot find any reference to the:

 

  • RequestSystemStatus

You may want to look at this FAQ post instead:

 

Feb 04, 2013 Question: Can I remotely control the Phone or send content to the Phone?

Answer: The <apps/> parameter can be used to utilize the push server controls and more information can be found => here <=

 

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 Polycom 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. My official "day" Job is 3rd Level support at Poly but I am unable to provide official support via the community.

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

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 5
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Member

Re: Question about uaCSTA support on SoundPoint 650

Thanks a lot. I verified the http connection method and it works. This is awesome.

But a new question popup, most of Polycom phones are deplolyed behind NAT and do not have public ip address. PBX server have no way to push call control message to it.

 

Is there any solutions for this? Could Polycom phone has persistent connection with the web server?

 

Message 5 of 5