title: How to fix Unknown RTP codec 126 received on aterisk?
body: <p>Hello Asterisk guys out there, im having trouble lately on our server. Before my everything is fine then suddenly i have this error of</p>
  
  <p>res_rtp_asterisk.c:4100 ast_rtp_read: Unknown RTP codec 126 received from 'X.X.X.X:55066'</p>
  
  <p>Cant dial my voicemail
  "</p>
  
  <pre><code>Sip.conf------------------------
  [johndoe]
  
  type=friend 
  secret=Jonddoe
  directmedia=no               
  disallow=all
  nat=force_rport
  allow=gsm                    
  allow=ulaw
  allow=alaw
  allow=g722
  allow=g726
  allow=h261
  allow=h263
  allow=h263p
  allow=h264
  mailbox=1234@default
  
  
  Extensions.conf--------------------
  exten =&gt; 1000,1,Dial(SIP/johndoe,30)
  exten =&gt; 1000,2,VoiceMail(1234@default)
  exten =&gt; 1000,3,PlayBack(vm-goodbye)
  exten =&gt; 1000,4,HangUp()
  
  exten =&gt; *1,1,VoiceMailMain(1234@default)
  
  
  
  
  Voicemail.conf------------------------
  1234 =&gt; 1234, johndoe, john@doe.com
  </code></pre>
  
  <p>"</p>
  
  <p>Hope you guys can give some insights and help me on this,</p>
  
  <p>Thanks in Advance!</p>