Zhone Technologies IMACS-200 manual SRU port State Status, Rate

SRU port User Screens and Settings SRU Ports

STATE

The State setting determines whether the port is active or inactive. Set this field to stdby (standby) for ports that are not to be used or that have not yet been configured. Set it to actv (active) for ports that are ready for use. The control leads assume the status shown in Table 8-3for the different states.

Table 8-3. SRU port State Status

Control Leads	Active	WAN Link Down	Standby
RLSD	High or follows remote RTS	Low	Low
CTS	Definable	Definable	Low

WAN

The WAN setting identifies the WAN or OWAN link assigned to this port. When choosing the type of wan, you must also select the desired port of the WAN or OWAN port for transmission over the T1 or E1 link.

It is not necessary to assign all SRU ports to the same WAN or OWAN link, nor to contiguous time slots on a WAN or OWAN link.

TS

The Time Slot setting identifies the time slot on the WAN link to which this port is connected. Values range from 01 to 24 for T1 links, and 01 to 31 for E1 links. The SRU port can further subdivide the WAN time slot into smaller segments for transmission of low-speed data. Each WAN time slot can be further divided into a maximum of twenty 2.4 kbps time slots (see Figure 8-2).

FRAME

The Frame setting allows you to define the sub-rate format that the port will use and to set the usable space allotted to each WAN time slot. The choices are DS0A (a) for one subrate time slot, DS0B with a limit of five subrate time slots (b-5). Note that all five ports will use the same framing mode, whichever the craft person chooses. Figure 8-2shows the DS0A and DS0B framing subrate time slot interaction.

RATE

The Rate setting allows you to select the rate in kilobits per second (kbps) for data transmission. The selection will change depending upon the framing mode and interface selected. Figure 8-2shows the bandwidth available for each selection.

8-4 Sub Rate Data Ports