User Guide

Configuration: Fractional T1 Configuration Using PPP
Local Management User’s Guide 2-21
Configuration: Fractional T1 Configuration Using PPP
This section provides step-by-step instructions for configuring the HSIM or CyberSWITCH to use
a fractional T1 circuit in a PPP environment. This example assumes the setup shown in
Figure 2-11 using two CSX400s with each containing a HSIM or CyberSWITCH. Configurations
may vary depending on the host platform. In a fractional T1 setup, only a portion of the 24
timeslots or DS-0s are used.
Figure 2-11 Fractional T1 Configuration
The line configuration information shown in Table 2-2 must be supplied by the service provider.
NOTE
The terms DS-0 (Digital Signal, level 0) and timeslot are used synonymously in this
guide to represent a standard 64,000 bps channel.
Table 2-2 Telco Configuration Information
Configuration Information
Required by User
Information Supplied by
Service Provider
Line Coding B8ZS or AMI
Frame Type ESF or D4
Clock Source Loop Timing or Local Timing
DS-0s (timeslots)
Timeslots being used for each end of
the circuit
SITE #1
with WPIM-T1/DDS
Telco Cloud
16 Timeslots
16 Timeslots
1482_06
SITE #2
with WPIM-T1/DDS