Cabletron Systems CyberSWITCH CSX200 User Manual page 71

Table 7 shows the line configuration information determined by your service provider. The
CSX200 factory default settings are in bold.
Configuration Information
Required by User
DDS Line Mode
DDS Clock Source
DDS Loop Back
This section describes the fields in the Wide Area DDS configuration window.
DDS Line Mode —
(primary) and DDS-CC 64K (clear channel). This information is determined by the service
provider. The default setting is DDS-PRI.
DDS Clock Source —
Loop-Timing or Local-Timing. The Loop-Timing setting allows the CSX200 to receive its timing
information from the service provider. The Local-Timing setting allows the CSX200 to generate
its timing information internally. If DDS-CC 64K was chosen for the DDS Line Mode then this
field must be set to Loop-Timing. The default setting for this field is Loop-Timing.
DDS Loop Back —
reserved for network diagnostics only. The default setting is No Loop.
Displays the active protocol for the Wide Area DDS interface. The selections for this
Protocol —
field are either Frame Relay or PPP. The default setting for this field is PPP.
Link Management Protocol —
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.
Once the Wide Area DDS configuration is complete, click on the Next>> button, and go to the
Bridging and Routing Configuration
Table 7 Telco Configuration Information
Displays the DDS Line Mode. The selections for this field are DDS-PRI 56K
Displays the DDS clock source. The selections for this field are either
Displays the internal loopback as either Line Loop or No Loop. Line Loop is
If Frame Relay is the selected protocol, this field displays Q.933
section of this guide.
CSX200 Configuration with QuickSET
Configuration Information
Supplied by Service Provider
DDS-PRI or DDS-CC
Loop-Timing or Local-Timing
No Loop or Line Loop
CSX200 Family User's Guide 57