Setting The Pulse Code Modulation; Setting The Loopback; Setting The Directory Number - Lucent Technologies PortMaster 4 Configuration Manual

Setting the Pulse Code Modulation

You need to set the pulse code modulation only if you are using digital modems and
your PRI service provider instructs you to change the setting to something other than
the default. This command sets the method for "companding"—compressing and
expanding—the amplitude of analog signals.
To set the pulse code modulation, use the following command. Table 10-8 explains the
pulse code modulation options.
Command> set Line0 pcm u-law|a-law
Table 10-8
Option
Line0
u-law
a-law

Setting the Loopback

You can test the telephone line of your T1 or E1 ISDN connection by setting the local
network loopback.
To set the loopback, use the following command:
Command> set Line0 loopback on|off

Setting the Directory Number

Normally, a T1 or E1 line has a single telephone number. However, when the line is set
up as ISDN B channels, you can set a telephone number for an individual virtual port.
This feature allows you to identify the circuit telephone number associated with a
specific ISDN PRI port.
To set a telephone number for an individual port when the line is configured as ISDN
B channels, use the following command. Table 10-9 explains the directory number
options.
Command> set S0 directory Number
Table 10-9
Options
S0
Number
Configuring T1, E1, and ISDN PRI
T1 and E1 Pulse Code Modulation Options
Description
Line0 through Line3 (T1), or Line0 through Line2
(E1).
Default method for T1 PRI lines.
Default method for E1 PRI lines.
Directory Number Options
Description
One of the virtual ISDN PRI ports.
Access telephone number.
Configuring ISDN PRI Settings
10-9