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Using a browser to complete Model 3196RC configuration 47
Model 3196RC T-DAC User Manual 3 • Configuring the T-DAC for operation
2. Click the System Clocking hyperlink on the 3196RC Configuration Menu to open the System Clocking
Configuration page (see figure 27).
Figure 27. System Clocking Configuration page, example 2
3. For Clock Reference select slave(3).
4. For Main Reference select system(500).
5. For Fallback Reference select wan-1(1).
6. Click the Submit Query button.
7. Select enable(1) to enable the fallback reference clock.
8. Click the Submit Query button.
Configuring the DS0 mapping
You need to make internal connections between an iDSL modem link and its destination. The destination of
an iDSL modem may be at the end of a T1 or E1 link, or another iDSL port. Each iDSL modem inside the
3196RC T-DAC is configured by selecting the number of DS0 time slots, each time slot being 64 kbps. You
may choose to map from 1 to 3 DS0 time slots in the iDSL modem. The most common destination for the
iDSL modems will be at the remote end of a T1/E1 WAN link.
The T-DAC’s iDSL port can operate at speeds ranging from 19.2 kbps up to 144 kbps. The table below shows
the number of timeslots required for each iDSL data rate.
Note
When an iDSL port is operating at the 19.2 kbps data rate, the iDSL
modem uses 2 timeslots (2 DS0s) for data transmission. Therefore,
when defining the DS0 mapping for any iDSL port operating at 19.2
kbps, you must define a 2-time slots connection.
Data Rate Number of DS0 Timeslots Required
rate19-2k(0) 2
rate32k(1) 1
rate56k(2) 1
rate64k(3) 1
rate128k(4) 2
rate144k(5 3