[arm-allstar] DTMF problems

[Doug Crompton]

Mani,

 As Robert pointed out you can go to the Asterisk client -  asterisk -rvvv

and see what characters are decoded as you push each key. A cause of this is often using discriminator audio without the deemphasis option enabled in simpleusb.conf.  Or having it mistakenly enabled when using speaker audio.  If it is set wrong the audio equalization will be such that the tones (DTMF is a two tone system) will have "twist" (non equal levels) and it won't decode properly.

If you have that set correctly there are some radios with very poor DTMF. The Baofeng radios are an example but any radio could have a problem.
73 Doug
WA3DSP
http://www.crompton.com/hamradio


From: mani at cox.net
To: arm-allstar at hamvoip.org
Date: Fri, 24 Apr 2015 18:32:13 -0700
Subject: [arm-allstar] DTMF problems














Good Evening,

Here is my quandary. When I am using my ht (Kenwood TH-D72)
I can issue dtmf commands to my node (41833) and everything works like a champ.
Then when I go out into my truck and use my Kenwood TM-D710, I can only issue
commands about system status or time, no connect commands. If I press *70 I get
the proper response. If I press *81 I get the proper response. If I press
*341921 to connect to that node all I get is a chirp and no connect is made.

Any clues?

 

73s Mani - KH2Fi







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