User Manual

December 16, 2002 Part 003609A revision 01 33
Chapter 2: Site Preparation
PSTN Gateway
The NPM does not connect directly to the PSTN. A PSTN gateway, such as a
PRI, connects the Amosphere IP-based equipment to the circuit-switched PSTN.
NOTE: Ensure that any equipment connecting the NPM to the
PSTN is UL-listed.
Edge Routers
The NPM requires a connection to at least one edge router configured to direct
packets between the NPM and the network core. The edge router connects to the
NPM using 100-Mbit/s Ethernet.
Backhaul Circuits
Depending on the configuration of your specific network, multiple T1 or
DS3/E3 backhaul circuits connecting a remote NPM or edge routers to the
network core may be necessary. See your E1 package for information about your
site’s backhaul circuits and the configuration of any necessary customer service
units (CSUs).
NOTE: Backhaul circuits must be tested by qualified personnel
before the NPM is placed into operation in order to ensure
connectivity with the core servers.
Internet Gateway
See your E1 package for Internet gateway requirements.
Core Servers
See your E1 package for core server requirements.