D.44. zaptel.conf
The zaptel.conf
file is not located with the other Asterisk .conf filesthe Zaptel driver is available to
any application that can make use of it, so it makes more sense to
store it in a non-Asterisk-specific directory (/etc/). zaptel.conf is parsed by the ztcfg program to configure the TDM hardware
elements in your system. You configure three main elements in the
zaptel.conf file:
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A way of identifying the interfaces on the card
within the dialplan
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The type of signaling the interface requires
-
The tone language associated with a particular
interface, as found in zonedata.c
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Be very careful not to plug your FXS module into
a telephone line. The voltage associated with the phone line,
especially during an incoming call, will be much too high for the
module to handle and may permanently damage it, rendering it
useless!
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Within the zaptel.conf file, we define the type of
signaling that the channel is going to use. We also define which
channels to load. The options in the configuration file are the
information that will be used to configure the channels with the
ztcfg command.
The actual parameters available in the
zaptel.conf file are quite
extensive, as a wide variety of PSTN interfaces make use of the
Zaptel telephony engine. Also, as this technology is rapidly
evolving, anything we write now may not be accurate by the time you
read it. Consequently, we won't try to list all of the options
here.
In this book, we have focused on the Zaptel
analog interfaces as provided by the Digium TDM400P card (see
Chapter 3).
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