Unknown RTP codec 100 received

Hi folks,
sorry i just realized i had posted my topic in the wrong category earlier, hopefully this will be the right one.

As soon as i have updated my asterisk from 11.7 to 11.11.0, start receiving the below NOTICES quite often and fax transmission has been stopped. I have read the solution i.e add a line in rtp.c like
[100] = {0, AST_RTP_DTMF},
but the problem is i am using yum install. is there any way to fix this issue without re-installation of asterisk?

The notices are
res_rtp_asterisk.c: Unknown RTP codec 100 received from ‘xx.xx.xx.xx:15080’

I have installed below packages
asterisk-addons-core-11.11.0-1_centos6.x86_64
asterisk-11.11.0-1_centos6.x86_64
asterisk-addons-mysql-11.11.0-1_centos6.x86_64
asterisknow-version-3.0.1-2_centos6.noarch
asterisk-doc-11.11.0-1_centos6.x86_64
asterisk-voicemail-11.11.0-1_centos6.x86_64
asterisk-dahdi-11.11.0-1_centos6.x86_64
asterisk-curl-11.11.0-1_centos6.x86_64
asterisk-sounds-core-en-gsm-1.4.24-1_centos6.noarch
asterisk-core-11.11.0-1_centos6.x86_64