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Blind transfer on VVX500

Occasional Contributor

Blind transfer on VVX500



I know that I can do a blind transfer by cklicking "Transfer"-"More"-"Blind", this works.


But when I read the user manual it should also work like this:


1 From Active Call, Lines, or Calls view, tap Transfer. The active call is held.
2 From the Dialer, place a call to the party you want to transfer the call to.
3 When you hear the ring-back sound, tap Transfer to complete the transfer. Or, if you want to talk with the person before the transfer completes, you can connect with the person, and then tap Transfer. To cancel the transfer before the call connects, tap Cancel.


So when I start a transfer as "Attended Transfer" and then decide to do it "blind" like described above, I don't get the "Transfer" Softkey when the other party is in ringing state, I only get it when it's in "connected" state.


Do I have to configure something differently?


Using 3CX and UC Software


Thanks in advance


Message 1 of 3
Occasional Contributor

Re: Blind transfer on VVX500

Seems to be that it's this parameter, but if I insert this in config file, it doesn't get accepted in phone. If I download config from phone web portal this parameter misses:








Message 2 of 3
Polycom Employee & Community Manager

Re: Blind transfer on VVX500

Hello Martin,


according to the UCS 4.0.1 Admin Guide:


voIpProt.SIP.allowTransferOnProceeding 0 to 1
If set to 1, a transfer can be completed during the proceeding state of a consultation call.
If set to 0, a transfer is not allowed during the proceeding state of a consultation call.


This parameter is standard and therefore will not be accepted as it is already applied.


I have not myself tested this scenario but usually your Polycom Reseller should be your support contact person and they can contact Polycom Support in your region to check this issue.


Another community member may reply but personal time restrictions wont allow me to play with this.


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. 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 3 of 3