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Imagine a Wi-Fi base station having a speed of 20 Mbit/s and an average packet size of 750 byte. How large should the IP queue be? A voice over IP client should be able to transmit a packet every 20 ms. The estimated maximum number of packets in transit would then be: Estimated buffer size = 20000000 * 0,020 / 8 / 750 = 66
(The commands AT+VBQ or AT#VBQ on voice modems will often reveal the size of the buffer in bytes, and 1 to 2 kilobytes is a typical response.) A third way to throttle playback involves inserting dummy DLE messages into the output stream such that the audio data takes a known amount of time to transmit through the serial port, and the playback ...
byte #8 (0x14) = Message Type ID - 0x14 (20) defines an AMF0 encoded command message. byte #9-12 (0x00000000) = Message Stream ID. This is in little-endian order. The Message Type ID byte defines whether the packet contains audio/video data, a remote object or a command. Some possible values for are: 0x01 = Set Packet Size Message. 0x02 = Abort.
When a connection is set up, the congestion window, a value maintained independently at each host, is set to a small multiple of the maximum segment size (MSS) allowed on that connection. Further variance in the congestion window is dictated by an additive increase/multiplicative decrease (AIMD) approach.
TCP window scale option is needed for efficient transfer of data when the bandwidth-delay product (BDP) is greater than 64 KB [1].For instance, if a T1 transmission line of 1.5 Mbit/s was used over a satellite link with a 513 millisecond round-trip time (RTT), the bandwidth-delay product is ,, =, bits or about 96,187 bytes.
20 ITU-T G.726 audio 40 kbit/s RFC 3551 dynamic G729D audio 1 8000 10 20 ITU-T G.729 Annex D RFC 3551 dynamic G729E audio 1 8000 10 20 ITU-T G.729 Annex E RFC 3551 dynamic G7291 audio 16000 20 ITU-T G.729.1: RFC 4749 dynamic GSM-EFR audio 1 8000 20 20 ITU-T GSM-EFR (GSM 06.60) RFC 3551 dynamic GSM-HR-08 audio 1 8000 20 ITU-T GSM-HR (GSM 06.20 ...
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Set to 0x07 (all bits on) PCR PID 13 The packet identifier that contains the program clock reference used to improve the random access accuracy of the stream's timing that is derived from the program timestamp. If this is unused. then it is set to 0x1FFF (all bits on). Reserved bits 4 Set to 0x0F (all bits on) Program info length unused bits 2