UCX50 5.0 W/ Polycom VVX 411 5.4.1. UCX50 5.0 W/ Polycom VVX 411 5.4.1. NorrinRadd1 (TechnicalUser) (OP) 19 Mar 18 14:09 UCX50 5.0 W/ Polycom VVX 411 188.8.131.5254 Is there a way to set an intercom VoiceCall button like on the Nortel systems. UCX50 5.0 w/ Polycom vvx411 telephones RE: UCX50 5.0 W/ Polycom VVX 411 5.4.1. ucxguy (Programmer) 19 Mar 18 17:23 "Voice Call" is available on UCx systems using the "Intercom prefix" feature (by default *80) - you can find this feature in the Paging and Intercom section on the Feature Codes page. Dialing the feature code and an extension number initiates an auto-answer call to that extension. For example, *80221 would initiate a "voice call" to the extension 221. You can program these digits to be dialed when you press a button on a SIP phone. Please note that auto-answer must be supported by the receiving phone(s). RE: UCX50 5.0 W/ Polycom VVX 411 5.4.1. NorrinRadd1 (TechnicalUser) (OP) 27 Mar 18 00:26 Thanks for the post. I'll give that try.