Cabletron Systems WPIM-RT1 manual Wpim Timeslot Configuration Table, Sample Timeslot Configuration

The WAN Physical Configuration Screen

•267-399 Ft

•400-533 Ft

•534-655 Ft

T1 Loopback (Selectable)

Network Loopback is a testing procedure that segments the line and allows the user to isolate faults. The selections for this field are None, Line-Loop, and Payload-Loop. In Line-Loop the entire T-1 line is looped back, including the framing bits, CRC, and the facility data link. This happens before the framer. In Payload-Loop, only the 24 time slots are looped back, which happens behind the framer, and does not include the framing bits, CRC, and facility data link. The WPIM-RT1 must be in Loop-Timing mode to use this option. The default setting is None.

3.1.3WPIM Timeslot Configuration Table

The WPIM Timeslot Configuration table allows the user to configure the way in which the Cabletron WAN module uses the T1 line. The configuration table consists of 24 Timeslots. Each Timeslot must be assigned an Interface number (for example, 002 for an active Interface number or 000 if the Timeslot is not used). When an entire T1 line is leased, all 24 Timeslots (the full T1 bandwidth) can be used. If only a fraction of the T1 line is leased, the service provider indicates which Timeslots to use.

Timeslots can be utilized in any way chosen. The WPIM-RT1 supports Time Division Multiplexing (TDM) allowing channelization of circuits (Timeslots) within the public network. For example, if the WPIM-RT1 has access to a full T1 (24 Timeslots), and the user wants to communicate with two other sites, the configuration might look like the one shown in Figure 3-2.

SITE #1

24 Timeslots

SITE #2

16 Timeslots

Telco Cloud

SITE #3
8 Timeslots	1482_02

Figure 3-2 Sample Timeslot Configuration

WPIM-RT1 User’s Guide 3-5