Helo, I have the following setting: SIP-Telephone 100 --------> FreeSWITCH <--------- SIP-Telephone 101 Both telephones are registered on FreeSWITCH but the have different codecs. SIP T-100 has GSM and SIP T-101 has PCMU. The FreeSWITCH server has the address 10.10.1.1 and the following extension configuration: <extension name="100"> <condition field="destination_number" expression="^100$"> <action application="bridge" data="sofia/codecGSM/100%10.10.1.1"/> </condition> </extension> <extension name="101"> <condition field="destination_number" expression="^101$"> <action application="bridge" data="sofia/codecPCMU/101%10.10.1.1"/> </condition> </extension> The definition of the profiles look like this: <profile name="codecGSM"> <settings> <param name="debug" value="1"/> <param name="rfc2833-pt" value="101"/> <param name="sip-port" value="5060"/> <param name="dialplan" value="XML"/> <param name="dtmf-duration" value="100"/> <param name="codec-prefs" value="GSM@20ms"/> <param name="codec-ms" value="20"/> <param name="use-rtp-timer" value="true"/> <param name="rtp-timer-name" value="soft"/> </settings> </profile> <profile name="codecPCMU"> <settings> <param name="debug" value="1"/> <param name="rfc2833-pt" value="101"/> <param name="sip-port" value="5060"/> <param name="dialplan" value="XML"/> <param name="dtmf-duration" value="100"/> <param name="codec-prefs" value="PCMU@20ms"/> <param name="codec-ms" value="20"/> <param name="use-rtp-timer" value="true"/> <param name="rtp-timer-name" value="soft"/> </settings> </profile> If I start freeswitch I get the following error: tport_server_addrinfo(0x809fb48): su_getaddrinfo((null), 5060) for *: Name or service not known nta: bind((null):5060;transport=*): No such file or directory nua: initializing SIP stack failed tport_server_addrinfo(0x80a2db8): su_getaddrinfo((null), 5060) for *: Name or service not known nta: bind((null):5060;transport=*): No such file or directory nua: initializing SIP stack failed How is it possible to handle telephones with different codecs? I thought this is possible with different profiles? I am very pleased for every hint! Kind regards, Bernhard Suttner