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Use the undo mode command to restore the default.
By default, ITU-T R2 signaling applies.
This command applies to R2 signaling only.
The R2 signaling standards implemented in different countries and regions may
vary. They are called ITU variants. To accommodate to the R2 signaling in a country
or region, you may use the mode command. The system can automatically select
the appropriate subscriber line state, service category, metering signal, and signal
values of C and D bits, and so on.
At present, the device supports Brazil, Mexico, Argentina, India, New Zealand,
Thailand, Bengal, South Korea, Hongkong, Indonesia, and other ITU-T variants.
With the default-standard keyword configured, the system initializes the
subscriber line status, service type, metering signal and C and D signaling bits and
other parameters depending on the default settings of configured national R2
signaling variants.
If the custom keyword is configured, you can customize specific signaling
exchange procedures and signal values in R2 signaling to accommodate to
countries.
Related command: register-value and force-metering enable.
Example # Adopt Hongkong default R2 signaling.
<Sysname> system-view
[Sysname] controller e1 1/0
[Sysname-e1 1/0] timeslot-set 0 timeslot-list 1-31 signal r2
[Sysname-e1 1/0] cas 0
[Sysname-cas1/0:0] mode hongkong default-standard
pcm
Syntax pcm { a-law | µ-law }
undo pcm
View Voice subscriber line view
Parameter a-law: Companding A-law, used in most part of the world other than North
America and Japan, such as China, Europe, Africa, and South America.
µ-law: Companding µ-law, used in North America and Japan.
Description Use the
pcm command to configure a companding law used for quantizing
signals.
Use the
undo pcm command to restore the default.