Inalp Networks SmartWare Release 2.10, Software Configuration Manual

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222 CS Context Overview
Software Configuration Guide Release 2.10, Revision 1.00
You must not start configure the CS context and its components until you have finished planning
your voice environment. The following chapters explain how to realize the planned voice
environment into the SmartWare CS configuration. The IP configuration is not a topic in this
example. For more information on IP configuration refer to Chapter 11, “IP Context Overview”.
24.4 Configure General CS Settings
There are several parameters which can not be collected into one specific configuration task, because
they are independent of the rest of the CS context configuration and apply mostly to a whole
interface card or even to the whole SmartNode.
In most cases the default value is suitable, so that you do not need to perform this configuration
tasks.
• Configure clock source:
The packaging of the ISDN voice frames needs a reference clock. It is possible to generate
this reference clock internally or get it from an external device (e.g. public ISDN). If you have
a connection to a public ISDN this is the normal case.
•
Select PCM law :
The PCM law-select specifies the voice characteristic compression curve. Two values are
possible: "a-Law" and "µ-Law". "a-Law" is used in Europe, and "µ-Law" in USA.
• Set PCM code:
The PCM code specifies which segmentation of the time slot is used. Two values are
possible: "E1" and "T1". "E1" is used in Europe, and "T1" in USA. T1 interfaces will be
supported in future releases.
•
Synchronize to ISDN time:
The internal time of the SmartNode can be synchronized to the time on the public ISDN.
• Set bypass mode
The SmartNode contains a hardware bypass, which connects two ISDN ports in case of
power failure. You can manually enable it on a running system.
Procedure
To set the general CS parameters
Mode
system
Command Purpose
Step 1 node (sys)#no bypass-mode Turn off the hardware bypass.
Step 2
node (sys)#clock-source internal
or
node (sys)#clock-source slot-number
port-number
Generate the reference clock internally
or
specify a specific port to receive the reference
clock.
Step 3 node (sys)#synchronize-to-isdn-
time
Enable SmartWare to get the actual system time
from public ISDN.
Step 4 node (sys)#ic voice slot-number
Change to mode ic_voice.
Step 5 node (ic-voice)[ slot-number ]#pcm
code E1
Set the PCM code for Europe
Step 6 node (ic-voice)[ slot-number ]#pcm
law-select aLaw
Select the PCM law for Europe