Cabletron Systems CyberSWITCH CSX500 Specifications download pdf (Page 88)

Configuration with QuickSET

72 QuickSET Configuration Guide

T1 Line BuildOut — Displays the signal level for the physical T1 line. Set this to 0 dB unless the

service provider recommends another setting. The default setting for this ﬁeld is 0 dB. The

following options are available for this setting: 0 dB, -7.5 dB, and -15 dB.

T1 Line Coding — Displays the line coding for the physical T1 line. The selections for this ﬁeld

are B8ZS and AMI. The default setting for this ﬁeld is B8ZS.

T1 Loop-Back — Network Loopback is a testing procedure that segments the line and allows you

to isolate faults. The selections for this ﬁeld are No Loop and Line Loop. In Line Loop all 24

channels are looped back to the T1 line. The device must be in Loop-Timing mode to use this

option. The default setting is No Loop.

T1 Transmit Clock Source — Displays the T1 Transmit Clock Source. The choices for this ﬁeld

are Loop-Timing (Extracted Line Data) and Local-Timing (Internal Clock). The default setting for

this ﬁeld is Loop-Timing.

Protocol — The Protocol panel lets you select one of four protocols: Point-to-Point, HDLC

(High Level Data Link Control), Frame Relay Point-to-Point, Frame Relay Point-to-Multipoint.

High Level Data Link Control lets you select either Full or Fractional mode for all or half of the

time slots (for a single interface number and alias). Point-to-Point protocol lets you select an

interface number for each time slot. Frame Relay Point-to-Multipoint allows only one interface

number and alias, but allows multiple DLCIs. Frame Relay Point-to-Point allows multiple

interface numbers, aliases, and DLCIs.

Link Management Protocol — When you select Frame Relay, this ﬁeld displays

Q.933 Annex A, T1.617 Annex D, and T1.617 Annex D 1994. The default for Frame Relay is

T1.617 Annex D. This ﬁeld is grayed out and not used for PPP.

DLCI Setup Button — The DLCI Setup button displays the DLCIs window shown on the

following page in Figure 79. The DLCIs window shows a list of Interface Numbers, Aliases, and

DLCIs (Data Link Connection Identiﬁers).

Use the Add button and the Add DLCI window to make entries to this table. Use the Delete

button to delete the entry highlighted. Click Done when you have ﬁnished.

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Cabletron Systems CyberSWITCH CSX500 Specifications Page 88