ADSL Platform HITACHI DSLAM Platforms HDSL Platform 220 Platform or DDM + Platform Serial (RS-232) Connections) NON -SECURE Dial-up (From External Location) Remote Location User DAC SONET Terminals M13 Multiplexers Individual Analog - Dial-up Connections Drawing Title: Ref Dwg Number: This document contains proprietary information and shall not be duplicated or disclosed without the written permission of Holly Street Communications, Inc. By accepting this document the recipient agrees to make every effort to prevent unauthorized use of this information. Page of Direct Network Element Dial-in HS - 071403a 1 1 Analog - Dial-up Connection Twenty Network Elements Four Dedicated Analog Dial-up Connections Four Dedicated Dial-up Numbers Multiple Network Elements not accessible Remote Access Many locations do not have access into remote IP or serial network elements. When a DSL circuit, remote network element, remote Digital Loop Carrier System require adjustments, the only recourse can be to drive out to the remote location and physically access the serial console port. Many times modems are connected to individual network elements allowing one to dial into the network element and make adjustments. Locations can have one, two and many times five and more modems connected to individual network elements. Modem Modem Modem Modem 3 3 3 3 3 3 3 3 3 3 IP    Island Non-Accessible or non- secure Network Elements Holly Street Communications, Inc. 5571 San Jose Drive Pleasanton, California 94566 www.hollystreetcomm.net