Asterisk doesnt detects DTMF tones of 1 and 2 digit

Hello, dear Asreisk gurus!
I have really strange problem and I absolutely don’t know what to do.
My configuration: AsteriskNOW 2.0.2, Digium TE210P, DAHDi 2.6.1.
There is a channel PRI E1 between my PBX Lg-LDK300 and Asterisk. The channel works perfect!

/etc/asterisk/chan_dahdi_groups.conf
signalling=pri_net
switchtype=national
pridialplan=unknown
prilocaldialplan=unknown
group=2
context=from-lg
channel=32-46,48-62

/etc/dahdi/system.conf
span=1,1,0,CCS,HDB3
span=2,0,0,CCS,HDB3,CRC4
bchan=1-10,32-46,48-62
dchan=16,47
loadzone=ru
defaultzone=ru

This is my context from PBX

[from-lg]

exten => s,1,Set(collect=A)
exten => s,2,Playtones(425)
exten => s,3,WaitExten(10)

exten => _X,1,StopPlaytones()
exten => _X,2,Set(collect=${collect}${EXTEN})
exten => _X,3,Goto(lg,1)

exten => lg,1,Set(TIMEOUT(response)=3)
exten => lg,2,WaitExten(5)

exten => t,1,Goto(from-internal,${collect:1},1)
exten => t,2,Hangup()

As you see, Asterisk generates tone when somebody calls, and waits to digits were pressed. When I press digit 1 or 2, Asterisk doesn’t see it, when Playtones(425) works. Other digits (3,4,5…) accepts well! When I disable Playtones(425) everything work fine! When I had changed the tone frequency (Playtones(300), Playtones(500), digits 1 and 2 also didn’t work.
Do you have any idea about this issue?

Thank you!

Hello,

Please contact Digium’s Support department directly.

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+1 256 428 6000
or via e-mail:
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