[asterisk-users] MOH distorted voice in Native and MP3 format

[MohammedShehzad]

>> I have been facing an issue that voice is getting distorted sometimes in
>> MOH
>> (MusicOnHold) application.
>> I have checked and confirmed that lame is properly installed, even tried
>> native formats (ulaw, alaw, gsm), but the randomly seen distortion in MOH
>> can't be eliminated.
>> I came to know about requirement of timing device for MOH and MeetMe and a
>> very good illustration by Andrew Kohlsmith on below old post.
>> http://www.mail-archive.com/asterisk@uc.org/msg01449.html
>>
>> I think that today's high speed processors are capable of providing timing
>> signals, and there is no need of timing device, and ztdummy is sufficient
>> for that.
>> I am wondering if it is MUST to have a separate timing device for properly
>> functioning of MOH?
>>
>>
>
> We have a customer reporting this too. It is very hard to reproduce though,
> that's why I didn't put it on the bugtracker yet. I heard it myself once.
> It sounds very bad. We use format_mp3. Didn't try anything else.
> Moving from ISDN to SIP seemed to have alleviated the problem a lot. Now
> it's even harder to reproduce, but the customer says it still happens
> occasionally.
>
> Running on 1.6.2.6.

Thanks Ron for you valuable input. I would probably raise in bug
tracker as soon as I find the way to reproduce.

Thanks Steave for pointing me out missing things. Call comes from SIP
providers only. Issue also detected few times while dialing from local
SIP phone.

-- 

-MohammedShehzad