Remote Gateway 9150 Installation and Administration Guide
185
June 2005
Configuring the Remote Gateway 9150 unit
Companding Algorithm
A Companding Algorithm, or coding law, is a PCM
standard for encoding an analog voice signal into a digital
bit stream. There are two main coding laws in common use
around the world, A-law and
µ
-law (Mu-law). A-law is the
standard in Europe and most areas outside of North
American influence, while the North American and
Japanese standard is Mu-law.
Select A-law or Mu-law if you want the Remote Gateway
9150 unit to override the Automatic default coding law.
Valid options are Automatic, Mu-law, and A-law.
Note:
Automatic (coding law) is the default setting. When
you choose Automatic, the Remote Gateway 9150 unit
uses the coding law configured for the ISDN BRI module
in use.
For a listing of line types and their respective default
coding laws, refer to “ISDN Line Type” on page 226.
Multiple Subscriber
Number
Remote Gateway 9100 Series supports Multiple
Subscriber Numbering (MSN), allowing you to configure
each B-channel with a unique DN. If you do not have a
unique DN for each B-channel, then the first B-channel
you configure defines the number for both B-channels.
Click on the
Enable
option button if the Central Office
provides a unique DN for each individual B-channel.
Click on the
Disable
option button if the Central Office
provides one DN to be used for both B-channels.
The default is Enable.
International Tones
Click on the
International Tones
button to configure
tones corresponding to your country on your Remote
Gateway 9150 unit. Refer to “International tones support”
on page 186 for a detailed description of the tones that you
can configure using this setting.
Field
Description
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