Cabletron Systems CSX200 CyberSWITCH, User Manual

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CSX200 Configuration with QuickSET
CSX200 Family User’s Guide 49
The line configuration information shown in Table 3 must be supplied by your service provider.
The CSX200 factory default settings are in bold type.
The following definitions explain the fields in the E1 WAN configuration window.
E1 Frame Type —
Displays the E1 frame type. The selection toggles between E1 and E1-CRC.
The default setting for this field is E1.
E1 Line Coding —
Displays the line coding for the physical E1 line. The selections toggle
between HDB3 and AMI. The default setting for this field is HDB3.
E1 Loop-Back —
Network Loopback is a testing procedure that segments the line and allows
you to isolate faults. Click on the radio button to select either the No Loop or Line Loop option. In
Line Loop, all 32 channels are looped back to the E1 line. The CSX200 must be in Loop-Timing
mode to use this option. The default setting is No Loop.
E1 Transmit Clock Source —
Displays the E1 Transmit Clock Source. Click on the radio button
to select either the Loop-Timing (Extracted Line Data) or Local-Timing (Internal Clock) option.
The default setting for this field is Loop-Timing.
Protocol —
Displays the active protocol for the E1 WAN port. The selections for this field are
either Frame Relay or PPP. The default setting for this field is PPP.
Link Management Protocol —
If Frame Relay is the selected protocol, this field displays Q.933
Annex A and T1.617 Annex D. The default for Frame Relay is T1.617 Annex D. This field is
grayed out and not used for PPP.
Table 3 Telco Configuration Information
Configuration Information
Required by User Configuration Information
Supplied by Service Provider
E1 Frame Type E1 or E1-CRC
E1 Line Coding HDB3 or AMI
E1 Loop-Back No Loop or Line Loop
E1 Transmit Clock Source Loop-Timing or Local-Timing
Time Slots (for Fractional E1) Time Slot (1-32) Assignments