asterisk users - May 2006 - Way to disable codec in dialingplan

in a dialing plan.. extensions.conf

can we enable or force a codec on specified npa..

EX: 514NNNNNNN,1,force(gsm)
      514NNNNNNN.2. dial(sip/blah)


???
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> can we enable or force a codec on specified npa..
Depends on the channel. On SIP you can set SIP_CODEC to force a codec,
but I don't think you can disallow one in the dialplan.

See:
http://voip-info.org/tiki-pagehistory.php?page=Asterisk+variables

--Luki