Page 367 - Asterisk™: The Future of Telephony

authdebug=no
autokill (global)
To minimize the danger of stalling when a host is unreachable, you can set
autokill to yes to specify that any new connection should be torn down if an ACK
is not received within 2,000 ms. (This is obviously not advised for hosts with high
latency.) Alternatively, you can replace yes with the number of milliseconds to wait
before considering a peer unreachable. autokill configures the wait for all IAX2
peers, but you can configure it differently for individual peers with the use of the
qualify command:
autokill=1500
bandwidth (channel)
bandwidth is a shortcut that may help you get around using disallow=all and mul-
tiple allow statements to specify which codecs to use. The valid options are:
high
Allows all codecs (G.723.1, GSM, µlaw, alaw, G.726, ADPCM, slinear, LPC10,
G.729, Speex, iLBC)
medium
Allows all codecs except slinear, µlaw, and alaw
low
Allows all medium codecs except G.726 and ADPCM
bandwidth=low|medium|high
bindport and bindaddr (global)
These optional parameters allow you to control the IP interface and port on which
you wish to accept IAX connections. If omitted, the port will be set to 4569, and
all IP addresses in your Asterisk system will accept incoming IAX connections. If
multiple bind addresses are configured, only the defined interface will accept IAX
*
connections. The address 0.0.0.0 tells Asterisk to listen on all interfaces:
bindport=4569
bindaddr=192.168.0.1
codecpriority (channel)
The codecpriority option controls which end of an inbound call leg will have
priority over the negotiation of codecs. If set in the [general] section, the selected
options will be inherited by all user entries in the channel configuration file; how-
ever, they can be defined in the individual user entries for more granular control.
If set in both the [general] and user sections, the user entry will override the entry

* Currently, Asterisk will only work with a single bindaddr option. If you wish to listen to more than one address,
you’ll need to use 0.0.0.0. Note that Asterisk will work in a multihomed environment, but not with multi-
address interfaces. Asterisk will use the system’s routing table to select which interface it sends the packet
out on and it will use the primary address on that interface as the source.

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