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The HP Community is where owners of HP products, like you, volunteer to help each other find solutions.
HP Recommended

Hello,

 

Setting up several VVX 600 phones which are working fine with the exception of blind transfers from internal extension to internal extension.

 

Blind transfer of an external call works normally, assisted transfers work as well.

 

Example: EXT 1 calls EXT 2, EXT2 blind transfers EXT1 to EXT3 it will immediately get "Transfer Failed"

 

Sip trace shows: ms-diagnostics: 1020;reason="Identity of the referrer could not be verified with the ms-identity parameter";ErrorType="Invalid signature

 

The same example above using IP560 phones works every time.

 

Anyone have a clue as to why this is happening?

4 REPLIES 4
HP Recommended

Did some testing and this works fine if I downgrade firmware to 5.0.0.7250. When I re-upgrade to 5.0.1.4068 the issue reappears.

HP Recommended

Hello kest874,

welcome to the Polycom Community.

In theory a Blind Transfer is a violation of the RFC:

 

 A UAC MUST NOT send an INVITE with a Replaces header field that attempts to replace an early dialog which was not originated by the target of the INVITE with a Replaces header field.

 

Is the extension you are dialing a phone or a response group for example?

 

The SPIP 560 mentioned earlier is most likely either running UCS 4.0.x or UCS 4.1.0 and changes / enhancements have been made since then.

 

You could try:

 

voIpProt.SIP.allowTransferOnProceeding="1"

 

I would suggest you bring this to the attention of your Polycom reseller and/or Polycom support as troubleshooting this is outisde the scope of the community.

 

 

Please be aware of the following when utilizing UCS 4.1.0 or later:

The use of Polycom UC Software versions 4.1.X (“Software”) requires the purchase of a separate Software license for every device that will use the Software in a Lync environment. You may not install, access, or use the Software in a Lync environment on more devices than are listed on your license until additional licenses have been purchased and authorized by Polycom. These licenses should be purchased from the same company from which you purchased the devices. You may operate devices against a Lync server for trial purposes for up to 30 days without purchasing a license. Use of the Software is subject to the terms and conditions of the End User License Agreement.

Polycom reserves the right to audit your deployment to verify that you have sufficient licenses to match the number of devices being used.


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

------------------------------------------------
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.

Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN
HP Recommended

In this case it's phone to phone to phone.  Issue doesn't exist on 5.0.0.7250, when using the same vvx600, only when it's updated to 5.0.1.4068.

 

voIpProt.SIP.allowTransferOnProceeding="1" made no difference.  This looks to be a bug.

HP Recommended

Hello kest874,

as originally already advised I would suggest you bring this to the attention of your Polycom reseller and/or Polycom support as troubleshooting this is outside the scope of the community.

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

------------------------------------------------
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.

Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the <a href="https://www8.hp.com/us/en/terms-of-use.html" class="udrlinesmall">Terms of Use</a> and <a href="/t5/custom/page/page-id/hp.rulespage" class="udrlinesmall"> Rules of Participation</a>.