TSP Edge User’s Manual
40-400-00065, Rev. E
26
E1 Card Mode
Figure 17 shows the parameters on the E1 tab in the E1 card mode.
Figure 17. E1 Card Mode E1 Tab
The Edge is capable of supporting up to 56 channels depending on configuration. In
the case where two E1s are configured for the unit, the last 4 channels of the second
E1 do not support messages or call progress tones and may only be used in Call
Originate and Call Terminate control sets. Also, if a Dual E1 module and a POTS
module are used, the last 8 channels (for 4 Channel POTS) or the last 12 channels (for
8 Channel POTS) are unavailable on the second E1.
Clock
The Clock needs to be set to where one end is providing timing (normally the PSTN)
while the other end is deriving clock from it (usually the CPE). The Internal clock
setting is used when the Edge acts as the PSTN and provides the clocking to the
equipment under test. External Clock is used when the Edge acts as the CPE and
clocks from the equipment under test (i.e., if the Edge is set for Internal clock, the
equipment under test should be set for External clock, and vice versa).
