Zhone Technologies IMACS-200 manual Wan Ts, Typical Ohsu Port Time Slot Assignment Screen Tx Clock

WAN TS

The TS (time slot) setting identifies the time slots on the WAN link. Unlike other user ports, the OHSU port can use many time slots on a single WAN or OWAN port to create a super-rate circuit for an individual OHSU port. One to 12 DS0 time slots on a single T1 or E1 can be assembled for use by an OHSU port in order to satisfy the speed requirements of the Telephone Protection Device (TPD).

The time slot numbers range from 1 to 24 for T1 links, and 1 to 31 for E1 links. Figure 10-3shows the display when table is selected. Using the space bar to select and deselect the time slot, this example shows time slots 1 to 5 on WAN 1-1 assigned to port 2. The time slot assignments have to be contiguous on any port.

Figure 10-3.Typical OHSU Port Time Slot Assignment Screen

Tx CLOCK

The OHSU ports behave as IEEE C37.94 MUX ports so the Transmit Clock (Tx CLOCK) setting can only be int (internal).

LOCAL LB

The LOCAL Loopback (LOCAL LB) option activates a loopback on the selected port. Choose the User setting to loop the outgoing data from the external TPE device back to the TPE receiver. This loopback (see Figure 10-4)allows you to check the local cabling and most of the optical circuitry in the OHSU port. It also disconnects the incoming data from the far end.

10-4 OHSU Ports