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How Does VoIP Work? Details on the SIP and RTP Protocols

    https://www.pathsolutions.com/blog/sip-and-rtp
    SIP is the control protocol, and RTP is the payload protocol used to send and receive the voice audio stream. SIP Ladder How Does SIP Work? Session Initiation Protocol (SIP) is designed to handle the "administrative" part of managing a …

Handling media with SIPp — SIPp 3.6 documentation

    https://sipp.readthedocs.io/en/latest/media.html
    The “RTP echo” feature allows SIPp to listen to one or two local IP address and port (specified using -mi and -min_rtp_port command line parameters) for RTP media. Everything that is received on this address/port is echoed back to the sender. RTP/UDP packets coming on this port + 2 are also echoed to their sender (used for sound and video echo).

SIPp - SourceForge

    http://sipp.sourceforge.net/doc/reference.html
    RTP/UDP packets coming on this port + 2 are also echoed to their sender (used for sound and video echo). RTP streaming. SIPp can play a PCMA, PCMU or G729-encoded audio file over RTP. More details on how to do this can be found in the action reference section. PCAP Play

Actions — SIPp 3.6 documentation

    https://sipp.readthedocs.io/en/latest/scenarios/actions.html
    PCAP play commands (specified using play_pcap_audio / play_pcap_video attributes) allow you to send a pre-recorded RTP stream using the pcap library . Choose play_pcap_audio to send the pre-recorded RTP stream using the “m=audio” SIP/SDP line port as a base for the replay.

Welcome to SIPp

    http://sipp.sourceforge.net/
    SIPp can also send media (RTP) traffic through RTP echo and RTP / pcap replay. Media can be audio or video. While optimized for traffic, stress and performance testing, SIPp can be used to run one single call and exit, providing a passed/failed verdict.

SIP and RTP/RTCP - Fortinet GURU

    https://www.fortinetguru.com/2018/10/sip-and-rtp-rtcp/
    The RTP port number is included in the m= part of the SDP profile. In the example above, the SIP INVITE message includes RTP port number is 49170 so the RTCP port number would be 49171. In the SIP response message the RTP port number is 3456 so the RTCP port number would be 3457. How the SIP ALG creates RTP pinholes

sip - Playing audio file using sipp - Stack Overflow

    https://stackoverflow.com/questions/20122607/playing-audio-file-using-sipp
    SIPp supports the ability to send a stream of pre-recorded RTP packets via the exec play_pcap_audio directive. (See the built-in uac_pcap scenario as a model for your scenario.) The packets to be sent are stored in a file with PCAP format. The packets can be extracted from a Wireshark capture of a test call, for instance.

sipp / Thread: [Sipp-users] Play rtp_stream from file

    https://sourceforge.net/p/sipp/mailman/sipp-users/thread/56FCB3D7.6020302%40ttc.cz/
    Hi Octavio, this is what I had in mind, but there is still a catch you have to address. If the contents of variable 99 is "10", both regexp="1" and regexp="10" match so both output variables become defined, because regular expressions operate on strings, not numbers, and "1" is a substring of "10".

Description of Media parameter in SIP "m=audio 12548 …

    https://stackoverflow.com/questions/27869523/description-of-media-parameter-in-sip-m-audio-12548-rtp-avp-0-8-101
    Next, type of media is "audio", not video, for example. (m=audio). 12548 is a port address for streaming media. "RTP/AVP" means "RTP Audio/Video Profile" and representing one of RTP profiles, which are coded by 0, 8 and 101. 0 is PCMU 8000 Hz, 8 is PCMA 8000 Hz, and 101 is payload type for DTMF digits sending. There are some links that can be ...

Difference between VoIP, SIP, RTP, RTCP, RTSP, RSVP ...

    https://nagendrabandi.com/difference-between-voip-sip-rtp-rtcp-rtsp-rsvp/
    SIP - Session Initiation Protocol - A protocol that is used to initiate the session and exchange call parameters, QoS etc., required to set-up the call. The packets are encapsulated using UDP transport layer protocol. RTP - The media (audio/video) itself is …

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