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C H A P T E R
7 :
O P T I O N S
High Freq Level [-dBm]
higher tone component in the case of a dual frequency tone, or zero
(0) in the case of a single tone.
First Signal On Time [10 msec]
msec units) for the first cadence on-off cycle.
First Signal Off Time [10 msec]
msec units) for the first cadence on-off cycle.
Second Signal On Time [10 msec] - "Signal On" period (in 10 msec
units) for the second cadence on-off cycle.
Second Signal Off Time [10 msec] - "Signal Off" period (in 10 msec
units) for the second cadence on-off cycle.
Using this configuration file, the user can create up to 16 different call
progress tones using up to 15 different frequencies. Each one of the call
progress tones is specified by the following parameters: the tone frequency
(either single or dual frequencies are supported) and the tone cadence. This
is specified by 2 sets of ON/OFF periods, but you may discard the use of the
second On/Off cycle by setting the relevant parameters to zero. When the
tone is made up of single frequency, the second frequency field should be
set to zero. [AUDI01]
7.2
Editing a CAS Protocol Table
7.2.1 Overview
CAS/Robbed Bit protocols implement the specific state machine. The user
can change the protocol's parameters and even the entire state machine via
two related files: the
Parameters Header File
The
Protocol Table Text File
various initialization parameters for tuning to a specific switch or PBX. The
Protocol Table Text File is named xxx.txt.
The
User-defined Parameters Header File
defined in the above Protocol Table Text File to their User-defined numerical
values.
The
User-defined
UserProt_defines_xxx.h.
The
Protocol Table/Script File
Protocol Table Text File xxx.txt has been compiled. It is the file which is
downloaded to the E1/T1 interface board during the initialization process.
The Protocol Table/Script File is named xxx.dat.
After a change has been made, the Protocol Table Text File must be re-
compiled and the interface board must be re-initialized in order to download
the updated Protocol Table/Script File xxx.dat.
F O R
A D V A N C E D
- Generation level in dBm of the
Protocol Table Text File
.
is describing the protocol state machine and
maps the text-named parameters
Parameters
is the file that is being created after the
34
U S E R S
- "Signal On" period (in 10
- "Signal Off" period (in 10
and the
User-defined
Header
File
is
named
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