On 8 April 2014 20:34, Tusker 21 <tusker212@gmail.com> wrote:
@Wash 1 number 2 extensions, i wonder if a 512 MB link from safaricom is sufficient for VOIP calls. approx how much MB do you need for an excellent VOIP call?
R, T21
You only need from 11kbps to about 128K (one way) to make a VOIP call depending on codecs in use (including overheads). Talk to me on competitive international rates/voip/ippbx setup and SIP/iax2 peering. Search no further. See below sampled... You certainly would use g729/g723 to save alot and still maintain quality (not CD quality) - BroadVoice Codec 16Kbps narrowband, and 32Kbps wideband - DoD CELP - 4.8 Kbps - GIPS Family - 13.3 Kbps and up - GSM - 13 Kbps (full rate), 20ms frame size - iLBC - 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size - ITU G.711 - 64 Kbps, sample-based Comes in two flavors: A-law and mu-law - ITU G.722 - 48/56/64 Kbps ADPCM 7Khz audio bandwidth - ITU G.722.1 - 24/32 Kbps 7Khz audio bandwidth (based on Polycom's SIREN codec) - ITU G.722.1C - 32 Kbps, a Polycom extension, 14Khz audio bandwidth - ITU G.722.2 - 6.6Kbps to 23.85Kbps. Also known as AMR-WB. CELP 7Khz audio bandwidth - ITU G.723.1 - 5.3/6.3 Kbps, 30ms frame size - ITU G.726 - 16/24/32/40 Kbps - ITU G.728 - 16 Kbps - ITU G.729 - 8 Kbps, 10ms frame size - LPC10 - 2.5 Kbps - Speex - 2.15 to 44.2 Kbps Kind Regards, Wilson./