Cabletron Systems manual Connecting the CSMIM-T1 to a Fractional T-1 Line

Telco Connection Information

Table 1-1 Telco Configuration Information

Configuration Information	Configuration Information
	Supplied by
Required by User
	Service Provider
Line Coding	B8ZS or AMI
Frame Type	ESF or D4
Clock Source	Loop Timing or Local Timing

1.8.2Connecting the CSMIM-T1 to a Fractional T-1 Line

In a fractional T-1 setup, only a portion of the 24 timeslots or DS-0’s are used. Some may be routed through the Drop and Insert Port to a PBX, as in a voice application. Table 1-2 provides a short list of information necessary to use a fractional T-1 circuit in a PPP environment. Configurations may vary depending on the hub. The line configuration information shown in Table 1-2 must be supplied by the service provider.

Table 1-2 Telco Configuration Information

Configuration Information	Configuration Information
	Supplied by
Required by User
	Service Provider
Line Coding	B8ZS or AMI
Frame Type	ESF or D4
Clock Source	Loop Timing or Local Timing
DS-0’s (Timeslots)	Timeslots being used for each
	end of the circuit

For more instructions on the T-1 setup, please refer to the Annex Network Administrator’s Guide for the CSMIM-T1.

CSMIM-T1 Hardware Installation Guide 1-11