Matrix ETERNITY NE Quick Start 7
• Locate the connector of the Door Phone module on the mainboard. Remove the 
screws on the studs for the module and keep them aside.
• The slot for the Door Phone module is located on the back panel and is covered 
with a flap. Use your finger to press the slot cover from the outside of the side 
panel of the enclosure, and release the flap. 
• Now, grasp the flap from inside the enclosure and pull up the flap. 
• Gently seat the Door Phone module on the connector on the mainboard such 
that the RJ45 connector of the module is aligned with the slot, and the connector 
pins on the module make complete contact with those on the mainboard. Do not 
apply pressure.
• When the module is seated firmly on the connector on the mainboard, secure 
the module with the screws on the studs.
• If you have no other module(s) to install, replace the top cover and secure the 
cover with the screws.
Connecting to Trunks
CO Trunks (Analog two-wire Trunks)
• Use standard, good quality, twisted-wire pair telephone cables with RJ11 plugs 
to connect the CO ports of ETERNITY to the Trunk Lines from your CO (central 
office). 
Mobile Networks
Enabling SIM PIN Protection
• Protect the SIM card from unauthorized use with a Personal Identification 
Number (PIN) on the SIM (in consultation with the customer/owner of the SIM).
To enable SIM PIN protection, 
• get a mobile handset. Insert the SIM into the mobile handset. 
• from the mobile handset, enable PIN Protection.