[asterisk-dev] send DTMF not Detected on SIP/XXXX using AMI +AGI+EXEC+SendDTMF

[HKC323]

This following setting has been configured.
dtmfmode=rfc2833 has been set .
set (Agi:async)
sip client : jisti sip soft phone
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issue : 
When Agent A1 and Agent A2 are on call
DTMF must be Passed and Feature must be exeute .
here DTMF detect but feaure not extecuted .
in case of local channnel DTMF and Feayure Both Worked.

BUT in SIP/xxxxxxxxxxxxxxx-XXXxxx not worked ??
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AMI +playDTMF tried but did not work .
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so tied with AGI+AMI+EXEX+SendDTMF but still not working 
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Action: AGI
Channel: SIP/1120-00000006
Command: EXEC senddtmf *1
CommandID: 0MyCommandSIP/1120-00000006

-- Unregistered SIP '1121'
[Apr 22 03:55:10] -- Registered SIP '1121' at 192.168.0.106:5060
[Apr 22 03:55:10] -- Added extension '1121' priority 1 to dundiextens
[Apr 22 03:55:10] > Saved useragent "Jitsi2.4.4997Windows 7" for peer 
1121
[Apr 22 03:55:10] NOTICE[3388]: chan_sip.c:27924 
handle_request_subscribe: Received SIP subscribe for peer without 
mailbox: 1121
[Apr 22 03:55:14] -- Unregistered SIP '1121'
[Apr 22 03:55:14] -- Unregistered SIP '1120'
[Apr 22 03:55:16] -- Registered SIP '1120' at 192.168.0.106:5060
[Apr 22 03:55:16] -- Added extension '1120' priority 1 to dundiextens
[Apr 22 03:55:16] -- Registered SIP '1121' at 192.168.0.106:5060
[Apr 22 03:55:16] -- Added extension '1121' priority 1 to dundiextens
[Apr 22 03:55:16] NOTICE[3388]: chan_sip.c:27924 
handle_request_subscribe: Received SIP subscribe for peer without 
mailbox: 1121
[Apr 22 03:55:16] NOTICE[3388]: chan_sip.c:27924 
handle_request_subscribe: Received SIP subscribe for peer without 
mailbox: 1120
[Apr 22 03:55:21] == Using SIP RTP CoS mark 5
[Apr 22 03:55:21] -- Executing [1121 at agent:1] NoOp("SIP/1120-00000006", 
"EXTEN:1121") in new stack
[Apr 22 03:55:21] -- Executing [1121 at agent:2] AGI("SIP/1120-00000006", 
"agi:async") in new stack
[Apr 22 03:56:08] -- AGI Script Executing Application: (senddtmf) 
Options: (4)
[Apr 22 03:56:55] -- AGI Script Executing Application: (senddtmf) 
Options: (*8)
localhost*CLI>



r 22 04:14:26] -- AGI Script Executing Application: (senddtmf) Options: 
(*1)
[Apr 22 04:14:26] DEBUG[3401]: manager.c:4831 match_filter: Examining 
event:
Event: AGIExec


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Any Help ????

Do in need to modify Manage.c and Channel.c .??


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