WAN Services
35
OnSite 2701A/I E1/T1 Ethernet Bridge (NTU) User Manual
5
• WAN Services
WAN Services
Configuring the OnSite NTU for E1 Operation
Web Configuration.
Launch
Internet Explorer
or similar web browser, type the IP address of the 2701A, enter
username
superuser
and password
superuser
. From the main page click on the
T1/E1 > Configuration
. (See
.)
Figure 15. E1 port configuration
Time Slot Select.
For unframed E1 service (Clear Channel) go to the “Line Option” parameter and select
“Clear Channel E1 (G.703).” For a full framed E1 enter 1-31, for partially filled E1 enter the range of timeslots
using the format for example: 1,2,3,5; or 1-5,10-31. Any entry for timeslots above 31 will return and invalid
selection message.
Line Options:
Choose from Clear Channel E1(G.703) or Channelized E1(G.703/G.704). Consult with your
service provider which option is required.
Line Code:
Choose from AMI or HDB3. Most E1 applications use HDB3.
Line Build Out:
Select 120 Ohms if the E1 connection is made via the RJ-48C connector, select 75 Ohm if
the E1 connection is made via the dual BNC connectors.
FDL Mode:
FDL is a T1 application, therefore select ‘Fdl- none’ for E1 applications.
Clocking Mode:
Options are Internal or Receive Recover Clock (network). In most applications clocking for
the 2701A will be derived from the E1 network, set the unit for Receive Recover unless instructed otherwise by
your service provider.
Idle code:
Options are Enabled or Disabled. When idle code is Enabled, the 2701A inserts idle codes (7E hex)
on unused timeslots. Set this option to
Disabled
unless instructed otherwise.
Power Down:
Options are Normal and Powerdown. When powered down, the E1 will put high impedance on
the input and output lines to protect the device—set unit to
Normal
for regular operation.
