Hey Steven Here is the result of command - sofia status profile internal I can see speex in the list. freeswitch@127.0.0.1:5222@internal> sofia status profile internal ================================================================================================= Name internal Domain Name N/A Auto-NAT false DBName sofia_reg_internal Pres Hosts 172.16.138.74,172.16.138.74 Dialplan XML Context public Challenge Realm auto_from RTP-IP 172.16.138.74 SIP-IP 172.16.138.74 URL sip:mod_sofia@172.16.138.74:5060 BIND-URL sip:mod_sofia@172.16.138.74:5060;transport=udp,tcp HOLD-MUSIC local_stream://moh OUTBOUND-PROXY N/A CODECS IN PCMU,GSM,PCMA,speex@8000h@20i CODECS OUT PCMU,GSM,PCMA,speex@8000h@20i TEL-EVENT 101 DTMF-MODE rfc2833 CNG 13 SESSION-TO 0 MAX-DIALOG 0 NOMEDIA false LATE-NEG true PROXY-MEDIA false ZRTP-PASSTHRU true AGGRESSIVENAT false CALLS-IN 0 FAILED-CALLS-IN 0 CALLS-OUT 0 FAILED-CALLS-OUT 0 REGISTRATIONS 1 --Neeraj