Paradyne COMSPHERE
3610 User Manual page 46

COMSPHERE 3600 Series Data Service Units
Rate(Kbps): Auto
Next Auto 64CC
1
DSU Data Rate. Data rate in kbps on the digital circuit. Sets the data rate of the DDS circuit interface. Auto is available
to identify the line rate. When a weak quality or a poor signal exists, Device H/S messages appear on the front panel
while the DSU continues to determine the data rate. Rate(Kbps) does not appear for EBrdg.
NOTE: Setting the actual data rate will result in maximum reliability and minimum power-up time. The actual data rate
is recommended over the Auto setting after installation.
Control and tributary DSUs set to 64CC or 64L must be set to the same rate.
When App Module ID displays XLOOP, the 19.2 kbps data rate results in a DDS network service of +6 dB.
Auto – DSU detects the data rate and displays the value in the H/S display. While attempting to detect the data rate, the
front panel will display Device H/S messages. Once the data rate is detected, the Device H/S will display the data rate in
place of Auto. To ensure proper line rates, configure the unit for the actual data rate. TxClkSource configuration option
must be set to DDS or RXC in order to locate the data rate.
64CC – 64 kbps Clear Channel on a 72 kbps circuit.
64L – 64 kbps LADS operation.
56 to 2.4 – Selects a DSU data rate between 56 and 2.4 kbps.
PrtSp(Kbps): 9.6
Next 64 56
12.0 9.6 9.2
2
Port Speed. Sets the speed of the DTE port interface. The port speed may be set to any value less than or equal to the
Rate(Kbps) configuration option value. If the value is set less than the DDS rate, the DSU performs rate adaption.
NOTE: When the Async Sync configuration option is enabled, the following port speeds will not appear:
32, 24.0, 18.8, 18.0, 9.2, 8.4, 4.4, 4.0, and 2.0 kbps.
64 to 1.2 – Selects the DTE's port speed.
Disab – Sets the port speed to 0 (zero) bps.
TxClkSource: DDS
Next Int RXC
Transmit Clock Source. Specifies the transmit timing source for the DSU. Not valid with EBrdg.
Int – Internal clock source. Timing is provided by the DSU.
RXC – Receive clock source. The DSU generates transmit timing from the receive data signal. This choice is provided
for LADS configurations and differs from the DDS selection when running tests.
3
Ext – External clock source. The DSU is timed by the external Transmit Timing lead on Port 1 only.
Prt1 to Prt6 – Selects Ports 1 through 6. The DSU is timed by the external Transmit Timing lead on the selected port.
DDS – DDS Network. The DDS network is the timing source for the DSU.
1
If operating in MCMP mode (MUX Funct is set to MCMP), the Rate(Kbps) default setting is 56 kbps.
2
Port speed does not appear if TDM or MCMP hardware is installed. Instead, this entry is made in the DSU Port Speed
Configuration Options for MCMP or TDM. Refer to Document No. 3610-A2-GB48.
3
In TDM and MCMP mode, the External clock source is replaced with Ports 1 – 6. Selecting a port number results in the
TDM operating with timing provided by the DTE at the selected port (EIA-232 Pin 24 or V.35 Pins U and W).
For EBrdg mode in full Backup, timing is set using the Bridge Timing configuration option. Refer to Document
No. 3610-A2-GB48.
4-2
DSU Configuration Options
64L 56 38.4
48 38.4 32 28.8
8.4 7.2 4.8 4.4
Ext Prt1 Prt2
December 1996
Table 4-1
(1 of 3)
19.2 9.6 4.8 2.4
24.0 19.2 18.8
4.0 2.4
Prt3 Prt4 Prt5
Prev
18.0 16.8
2.0 1.2 Disab
Prt6 DDS Prev
3610-A2-GB46-60
14.4
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