Plantronics + Polycom. Now together as Poly Logo

VVX 1500 (5.9.1) only shows BLF when ringing

Polycom Employee & Community Manager

Re: VVX 1500 (5.9.1) only shows BLF when ringing

Hello @bobjase ,


to bring this to a conclusion using a VVX1500 or a VVX 601 the BLF process outlined => here <= shows the BLF on a VVX 1500 (or VVX 601) as follows:


Idle stateIdle state 



Busy or Alerting stateBusy or Alerting state

RFC 4662 support was added by Digium / Asterisk => here <=


Polycom addressed an issue in VOIP-119610 where a phone would crash SUBSCRIBING to a attendant.uri.


Support for RFC 4662 was added by Polycom back in 2009 via VOIP-42091 and focuses mainly on our Partner Broadsoft.


Any change to the above would require a feature request as explained in detail => here <= 

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 11 of 11