Black Box LRA 2900, Reference Manual

Page: 159 / 280

13 • Frame Relay Model LRA2900A RAS Administrators’ Reference Guide
159 Configuring a Frame Relay link
Note The following settings must match the line configuration provided by
the local telephone company. For more information on setting up
your T1/E1, see the Getting Started guide that came with your access
server.
4. Click on the Line Type drop-down menu and choose one of the following options:
— For a T1 line, select dsx1ESF(2) (Extended SuperFrame DS1) or dsx1D4(3) (A&T D4 format DS1).
— For an E1 line, choose either
dsx1E1(4)
or
dsx1E1-CRC(5)
.
5. Click on the
Line Coding
drop-down menu and choose one of the following options:
— For T1: If you selected
dsx1D4(3)
line type, select
dsx1AMI(5)
line coding. If you selected
dsx1ESF(2) line type, choose dsx1B8ZS(2) line coding.
— For E1: Select either
dsx1AMI(5)
or
dsx1HDB3(3)
. Most installations will use HDB3.
6. Click on the
Line Build Out
drop-down menu and choose one of the following options:
— For T1: Select
t1pulse0dB(2)
.
— For E1, select e1pulse(1) .
7. Click
Submit
.
8. Click on the
Signal Mode
drop-down menu and choose the appropriate signalling mode:
— robbedBit
— messageOriented
— bitOriented
9. For a robbed-bit line, select the appropriate signalling protocol.
10. For a PRI, select the appropriate message-oriented switch type.
11. Click Submit .
At this point, the access server’s front panel LEDs should now be showing signs that the line is active. If the
phone company line is not connected to the access server, the error indicator will glow red for that line/
connection.
WAN Channel Assignment main screen
The next stage in configuring a Frame Relay link is to set the number of 64-kbps channels on the T1/E1 that
will carry the data. Each channel is 64 kbps in speed and must correspond to the same channels that your pro-
vider is using. Usually your provider will start from channel 1. For example: a 256-kbps link could be divided
into 64-kbps channels numbered 1, 2, 3, and 4.
To set the channel assignment:
1. Click on
T1/E1 Link
under the
Configuration Menu
to display the T1/E1 Link Activity main win-
dow (see figure 85 on page 247).
2. Click on
Channel Assignment
in the appropriate Link: x section (for example, if the T1/E1 cable was con-
nected to port 2, you would click on Channel Assignment in the Link: 2 section).