ADTRAN 1200060L1, Руководство пользователя

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Chapter 3. Operation
61200060L1-1 TSU User Manual 3-19
3) PORT, SUBMENU OF CONFIG
The menu item PORT is used to select and then to configure
the parameters associated with the V.35.
1. Follow standard operating procedure to access 3)PORT .
2. Press
ENTER
. The first nine submenu items appear.
3. Continue with standard operating procedures.
RATE 56/64
This sets the base rate of the interface. The actual data rate
depends on the number of DS0s assigned to the Nx port. The
DTE data rate vs. the number of DS0s appear in Appendix II.
Choices: 56K or 64K
CHANNELS
This sets the unit to use alternate or contiguous channels in
the T1 data stream. If greater than 12 channels are used, then
contiguous must be used. If not, then alternate channels may
be used to meet pulse density requirements (only necessary
for Nx 64 without B8ZS). If other than a private network, the
carrier must be notified of this choice.
Choices: ALT or CONT
DTE TX CLK
Controls the clock used by the TSU to accept the transmit
(TX) data from the DTE. Normally this is set to
INTERNAL
. If
the interface cable is long causing a phase shift in the data,
the clock can be selected as
INT/INV
(Internal/Inverted). This
switches the phase of the clock which should compensate for
a long cable. If the DTE provides a clock with TX data, the
clock selection is set to
EXTERNAL
. The TSU will depend on
an externally supplied clock to accept the TX data.
Choices: INTERNAL, INT-INV, or EXTERNAL
START CHAN
Used to select the channel in which the T stream will start.
The setting must be consistent with the carrier if using a
public network.
Choices: 01 through 24