Warnings displayed when using meetme DTMF passthru patch

[janus]

astguiclient version: 2.0.3
asterisk version: 1.2.24
OS: CentOS

I installed the meetme dtmf passthru patch on 2.0.3 version of astguiclient.
Just want to ask why there are warnings displayed on asterisk cli when sending dtmf on meetme.

-- Executing MeetMe("IAX2/dialer-2", "8600002|qF") in new stack
== Parsing '/etc/asterisk/meetme.conf': Found
== Spawn extension (default, 8600002, 0) exited non-zero on 'IAX2/dialer-5'
-- Executing MeetMe("IAX2/dialer-5", "8600002|qF") in new stack
== Parsing '/etc/asterisk/meetme.conf': Found
-- Created MeetMe conference 1021 for conference '8600002'
== Manager 'sendcron' logged off from 127.0.0.1
== Parsing '/etc/asterisk/manager.conf': Found
== Manager 'sendcron' logged on from 127.0.0.1
== Parsing '/etc/asterisk/manager.conf': Found
== Manager 'sendcron' logged on from 127.0.0.1
== Manager 'sendcron' logged off from 127.0.0.1
Jan 16 16:34:02 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
== Manager 'sendcron' logged off from 127.0.0.1
Jan 16 16:34:12 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
Jan 16 16:34:12 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
Jan 16 16:34:13 WARNING[7171]: channel.c :2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
Jan 16 16:34:13 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
Jan 16 16:34:15 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
-- Registered SIP '2099' at 124.106.69.200 port 60009 expires 120
Jan 16 16:34:37 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
Jan 16 16:34:44 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
-- Registered SIP '2099' at 124.106.69.15 port 64205 expires 120
Jan 16 16:34:50 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
Jan 16 16:34:51 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
Jan 16 16:34:52 WARNING[7171]: channel.c :2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
Jan 16 16:34:52 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds
Jan 16 16:34:53 WARNING[7171]: channel.c:2290 ast_write: Thread 1082792288 Blocking 'IAX2/dialer-2', already blocked by thread 1080662368 in procedure ast_waitfor_nandfds

[mcargile]

This is currently begin discussed on the asterisk-dev mailing list. It has to do with concurrence issues.

[mflorell]

I have a few clients with the patch installed and these warnings come up on their systems. They don't seem to be causing any serious problems in audio quality or stability.

[janus]

So far we don't have any complains yet from our clients in terms of audio quality and it doesn't also causes the asterisk to hangup or crashes. Thanks Matt.