Protocols and Standards

Supported protocols/standards Description
Public telephone network (ISDN)  
BRI Basic Rate Interface ISDN connection with 2 B channels, PTP (Point to Point) and PTMP (Point to Multipoint) connection variants
PRI Primary Rate Interface ISDN connection with 30 B channels, connection variant PTP (Point to Point)
DSS-1 Signalling protocol in ISDN
G.711A Voice coding according to G.711A (64kbit/s)
T.30 Fax protocol in telephone networks
SIP-Provider (SIP-Trunking)  
SIP Session Initiation Protocol
STUN (RFC3489) STUN Support (simple passage of UDP through NAT firewalls)
G.729A Compressed voice coding according to G.729A (17kbit/s)
G.711A Voice coding according to G.711A (64kbit/s)
G.711u Voice coding according to G.711u (56kbit/s)
G.722 Broadband voice coding according to G.722 (64kbit/s)
T.38 Fax over IP (T.38)
ENUM/DNS SRV (RFC 3263) ENUM Support Telephone Number Mapping
DTMF (SIP INFO, RFC 2833) DTMF generation
SwyxIt! Communication Client  
SIP UDP Session Initiation Protocol
G.729A Compressed voice coding according to G.729A (17kbit/s)
G.711A Voice coding according to G.711A (64kbit/s)
G.711u Voice coding according to G.711u (56kbit/s)
G.722 Broadband voice coding according to G.722 (64kbit/s)
RTP (RFC3550) Transport protocol for voice and video data
SRTP (RFC3711) SRTP encryption of voice data via the Secure Realtime Transport Protocol (SRTP) for SwyxPhone telephones and SwyxIt!
SIP Presence PDIF (RFC3856) Presence Event Package in Session Initiation Protocol
DTMF (SIP INFO, RFC 2833) DTMF generation
MIKEY Protocol for exchange of encryption parameters for SRTP
SwyxPhone System Telephone  
  Proprietary stimulus protocol
G.729A Compressed voice coding according to G.729A (17kbit/s)
G.711A Voice coding according to G.711A (64kbit/s)
G.711u Voice coding according to G.711u (56kbit/s)
G.722 Broadband voice coding according to G.722 (64kbit/s)
RTP (RFC3550) Transport protocol for voice and video data
SRTP (RFC3711) SRTP encryption of voice data via the Secure Realtime Transport Protocol (SRTP) for SwyxPhones Lxxx and SwyxIt!
MIKEY Protocol for exchange of encryption parameters for SRTP
SIP terminal devices  
SIP UDP, TCP, TLS (RFC3261) Session Initiation Protocol (SIP)
SIP Message Waiting Subscription/Indication (RFC3842/RFC3265) Session Initiation Protocol (SIP) Specific Event Notification for MWI
SIP Subscribe/Notify (RFC3265) Session Initiation Protocol (SIP) Specific Event Notification
G.729A Compressed voice coding according to G.729A (17kbit/s)
G.711A Voice coding according to G.711A (64kbit/s)
G.711u Voice coding according to G.711u (56kbit/s)
G.722 Broadband voice coding according to G.722 (64kbit/s)
RTP (RFC3550) Transport protocol for voice and video data
SRTP (RFC3711) SRTP encryption of voice data via the Secure Realtime Transport Protocol (SRTP) for SwyxPhones Lxxx and SwyxIt!
MIKEY Protocol for exchange of encryption parameters for SRTP
SIP Presence XPDIF (RFC4235) Presence Event Package in Session Initiation Protocol
DTMF (SIP INFO, RFC 2833) DTMF generation
Other  
802.1p and DiffServ Support of QoS layer 2 (802.1p) and layer 3 (DiffServ)
SMTP SMTP Simple Mail Transport Protocol for sending voicemails and faxes to a mail server
IMAP4 IMAP4 Interactive Mail Access Protocol for retrieving voicemails from a mail server
Microsoft TAPI Interface defined by Microsoft. Via this interface, other telephone applications can control SwyxIt! on the client PC.
Codec Transparenz With the help of Codec transparency, devices with non-supported Codecs such as video telephones or telepresence solutions can be operated with SwyxWare.