|VoIP-protokoll||RTCP, SIP, RTP, SDP, SRTP|
- Simplicity and ease of use
- Unsurpassed voice quality and clarity
- Maximize productivity
- Best-in-class deployment and administration
- Customizable and expandable
- Market-leading open standards interoperability
The Polycom VVX 400 Series are expandable color business media phones that deliver crystal clear communications, enhanced collaboration and personal productivity.