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I am having issues setting the caller id on outbound calls from an asterisk box. &nbsp;I have set the caller id in the dial plan etc., but cid on receiving phones still shows the carrier's phone number. &nbsp;All calls to extensions managed by server are showing the correct caller id but when I place a call through the carrier, it shows their DID. &nbsp;They have assured me they are set to allow me to set caller id and have asked that I &quot;provide a trace on the outbound calls to determine if the FROM in the IP header is correct.&quot;<br />
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How do I do this on Linux Ubuntu?<br />
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I am a newb with linux and with tracing IP packets.<br />
<br />
Thanks a million!
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I am having issues setting the caller id on outbound calls from an asterisk box.  I have set the caller id in the dial plan etc., but cid on receiving phones still shows the carrier's phone number.  All calls to extensions managed by server are showing the correct caller id but when I place a call through the carrier, it shows their DID.  They have assured me they are set to allow me to set caller id and have asked that I "provide a trace on the outbound calls to determine if the FROM in the IP header is correct."

How do I do this on Linux Ubuntu?

I am a newb with linux and with tracing IP packets.

Thanks a million!

How to trace IP header of and outbound SIP call, to see what is in the &quot;From&quot;

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.

IP Telephony

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).

How to trace IP header of and outbound SIP call, to see what is in the &quot;From&quot;

How to trace IP header of and outbound SIP call, to see what is in the "From"