Matrix ETERNITY NE System Manual 37
Connecting SIP Extensions
ETERNITY NE supports up to 16 SIP Extensions. The SIP Extensions function as any normal DKP/SLT extension 
of the ETERNITY NE. SIP Extension users can make and receive calls to any extension user of the ETERNITY and 
to external numbers over CO, Mobile and VoIP
4
 networks.
You may register any SIP-enabled device, like an IP-phone, a Soft phone, Analog Phone Adapter, as the 'SIP 
Extension' of the ETERNITY NE. 
You may also connect the Matrix Extended IP Phone, SETU VP248, as SIP extension of ETERNITY NE. The 
Extended IP Phone takes on all the functions of EON48, the proprietary digital key phone of Matrix.
The first 8 SIP extensions are free. To increase the number of SIP extensions, you will require the IP8 
License. Make sure you have a valid License Key when connecting more than 8 SIP Extensions. See 
“License Management” to know more.
The SIP Extensions may be registered either over Ethernet WAN or over Wireless WAN (Mobile 1/Mobile 2), according 
to your preference and your IP network installation scenario.
Ethernet WAN
If ETERNITY NE is connected to a Public Network,
• Connect SETU VP248, the Extended IP Phone, or any Open IP SIP device to the LAN Switch.
• Register any SIP client on the public network as SIP extension.
When you register any SIP device, other than the Extended IP Phone, on the public network as SIP 
Extension, you must configure the Registrar Server Address of ETERNITY NE, the Registrar Server Port, 
the SIP ID, Authentication ID and Password in the SIP device. 
4.  VoIP-to-PSTN routing may be subject to Regulation in your country. Read “Logical Partition”.