Quick Eagle Networks DL3800E - Manual (Page 67)

Terminal Interface 4-27
4
TSLOT16 Allows you to select between DATA and FLAG. If DATA is selected, timeslot
16 will be used for payload data. If FLAG is selected, timeslot 16 will not be
used for payload and will be stuffed with the value 7E hex.
NOTE: E1 links are not truly independent. This field is selectable on a per-
E1 link basis. When the DL3800E unit treats the set of E1 links as a whole.
If only one E1 link is selected for FLAG, then the DTE bandwidth is reduced
to an amount corresponding to all links having been set for a time slot loss.
Primary Clock Source This allows you to select either the Primary Clock Source, transmit (xmt), and
receive (rcv) for the individual E1 network ports.
To change the present Primary Clock Source, use the UP and DOWN
ARROW keys to highlight either Xmt or Rcv on the Primary Clock Source
line, and use the Space Bar to toggle between the choices. For Xmt
(transmit) the choices are Network (NET), External (EXT), and Internal (INT).
For Rcv (receive) the choices are Net-1 through Net 8 (each of the individual
E1 network ports), or Auto (the unit selects the best source).
The DL3800E unit can use several sources to generate the transmit clock.
The Internal selection uses an oscillator within the DL3800E, the Network
setting recovers the clock from the selected E1 line, and the External setting
recovers the clock from the dB-9 Ext. Clock connector on the rear panel of
the unit. Typically, the clock source on one side of the link is set to Internal,
and the other is set to Network. (Default - Smt: Int., Rcv: Net 1)
Secondary Clock Source This allows you to select either the Secondary Clock Source, transmit (xmt),
and receive (rcv) for the individual E1 network ports.
To change the present Secondary Clock Source, use the UP and DOWN
ARROW keys to highlight either Xmt or Rcv on the Secondary Clock Source
line, and use the Space Bar to toggle between the choices. For Xmt
(transmit), the choices are Network (NET), External (EXT), and Internal (INT).
For Rcv, the choices are Net-1 through Net 8 (each of the individual E1
network ports) or Auto (the unit selects the best source) until the desired
choice appears. (Default - Xmt: Int, Rcv: Net2)
DSU Mode This allows youyou to set the DL3800E unit up as a DSU, with one DTE, and
one Network port.
To change the present DSU Mode level, use the UP and DOWN ARROW
keys to highlight the DSU Mode item, and use the Space Bar to toggle
between the following selections until the desired choice appears: Inverse
MUX (standard operation) or Single E1 DSU. Highlight Confirm, and press
the Enter key to confirm the change. (Default-Inverse Mux)
Table 4-7 NETWORK CONFIGURATION MENU Options (Continued)
Parameter Description/Action