8 Matrix ETERNITY NE System Manual
The VoIP Interface
The Voice-over-IP (VoIP) Interface routes over the Internet, all the outgoing and incoming calls made or received
by the extensions of the ETERNITY and extensions of other PBXs that are networked with the ETERNITY.
The VoIP Interface supports Session Initiation Protocol (SIP), the industry standard VoIP.
The VoIP Interface supports SIP Trunks and SIP Extensions
1
.
With SIP Trunks users can make IP calls using the SIP Server of the Internet Telephony Service Providers (ITSPs).
The VoIP Card has an in-built Registrar Server that allows any SIP enabled device like a Wi-Fi mobile handset, a
PDA or an IP-Phone to be registered with it and function as the 'SIP Extension' of the ETERNITY. The SIP
Extension users can make and receive calls to any extension user of the ETERNITY as well as any external
numbers over PSTN, GSM, VoIP. With SIP Extensions, organizations can communicate and stay connected at the
lowest cost without any geographical restrictions.
The VoIP Interface supports adaptive jitter buffer for reducing delay and improving speech quality.
The key features of the VoIP Interface are:
• 4 SIP Trunks - for Proxy as well as Peer-to-Peer (non-Proxy) calls.
• Up to 16 SIP Extensions - Standard IP Phones and Matrix Extended IP Phones.
• 8 Simultaneous Voice Calls.
• Selectable Network Assignment (Connection Type) - Static IP, DHCP, PPPoE.
• Selectable DNS - Automatic and Static.
• Dynamic DNS for client.
• STUN.
• TCP and UDP NAT Keep Alive.
• Symmetric RTP Selection.
• MAC Address Cloning option.
• Fax over IP - T.38 (UDPTL), T.38 (RTP) and Pass Through.
• Send CLI Option for outgoing calls
• Selectable DTMF - RTP (RFC 2833), SIP Info, InBand
• Flash Detection using SIP INFO and RFC2833.
• Broad Voice Codec Selection: G.723, G.729ab, GSM FR, iLBC - 30 ms, iLBC - 20 ms, G. 711
µ-Law, and
G. 711 A-Law.
• Quality of Service - SIP DiffServe/ToS, RTP DiffServe/ToS
• VoIP Silence Detection and Disconnection.
• Voice Mail Subscription on SIP Extensions.
• Busy Lamp Field Subscription on SIP Extensions.
• Upto 10 Call Appearances on Extended IP Phone Extensions.
• Registration of SIP Extensions from 3 different locations.
The Digital Key Phone Interface
The Digital Key Phone Interface of the ETERNITY is for the purpose of connecting the proprietary Digital Key
Phones of Matrix Comsec, namely EON, the PC-based phone EONSOFT and the proprietary Direct Station
Selection (DSS) Consoles with the ETERNITY.
1. License required for SIP Extensions.
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