WAN Serial Port Configuration
31
OnSite 2701A/I E1/T1 Ethernet Bridge (NTU) User Manual
4
• Serial Port Configuration
ration
. (See
.)
Figure 13. T1 configuration
Time Slot Select.
For a T1 using all 24 time slots enter 1-24, for fractional T1 enter in any format for example:
1,2,3,5; or 1-5,10-24. Any entry for timeslots above 24 will return an invalid-selection message.
Line Options:
Fractional T1
Line Code:
The 2701A uses B8Zs and AMI. B8Zs is the most widely used.
Line Build Out:
Select from 100 0dB, 100 Ohm -7.5dB, 100 Ohm -15dB, and – 22.5dB. For CSU/DSU
application use 100 0dB option, consult your T1 service provider for more information.
FDL Mode:
Options are ANSI-T1-403 and Fdl-none. Consult your T1 service provider if FDL is active on
your T1 link.
Clocking Mode:
Internal, Receive Clock (network). In most applications clocking for the 2701A will be
derived from the T1 network, set the unit for Receive Recover unless instructed otherwise by your service pro-
vider.
Idle code:
Enabled, Disabled. When enabled, the 2701A inserts idle codes (7E hex) on unused timeslots. Set
this option to ‘Disabled’ unless instructed otherwise.
Power Down:
Normal, Powered Down. When powered down, T1/E1 transceiver input and output lines will
be set to high impedance to protect the device – set unit to “Normal” for regular operation.
After all options have been selected, click on the
Configure and Activate
button at the bottom of the screen.
Additionally, save the configuration in non-volatile memory by going to the
System Configuration > Save
menu.
This concludes the T1 interface configuration via the web browser, go to section
on page 50 for instructions on NTU/bridge and WAN service configuration.
