Telecoms Configuration; Figure 52 - Telecoms Data Entry - Motorola PTP 300 Series User Manual

7.5.5 Telecoms Configuration

The Telecoms page (Figure 52) is available when the Telecoms Interface has been set to
either T1 or E1 in the Installation Wizard.
The unit displays the interface setting and line code for the available telecoms channel.
The Telecoms page contains the following fields:
Telecoms Interface
May be either T1 or E1, reflecting the Installation Wizard setting.
Telecoms Line Code
Displays the Line Code setting for the E1 or T1 channel. This must match the configuration of
the connected equipment and may be set using the Installation Wizard.
Telecoms Cable Length
The Cable Length setting is applicable in T1 mode only and shows the cable length specified
in the installation wizard.
Telecoms Loopback
Allows the T1 or E1 data stream to be looped back at the copper or wireless interface. During
normal operation the loopback must be set to "None". It may be helpful during installation to
test the telecoms links by performing loopback connections.
A "Copper" loopback connects the received data on a given telecoms interface to the transmit
interface. A "Copper" loopback may be used, in conjunction with a Bit Error Rate Tester, to
confirm that the correct connections have been made to the ODU. This mode cannot be used
for resistance tests as it is only capable of looping back valid telecoms signals.
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Figure 52 - Telecoms Data Entry

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