voipthink.com
Voip Think - Codecs : codec examples
http://www.voipthink.com/codec/audi_codec.php
3CX PBX and Phone System for Windows. SIP (Session Initiation Protocol). IAX (InterAsterisk eXchange Pr.). SIP vs H.323. QoS (Quality of Service). SER (Sip Express Router). New codecs G.711.1 -G722.2- G729.1. In this page you could hear some codec samples to compare the quality. When the sampling rate is higher the quality is worse. On the other hand, the sampling rate reduces the bandwidth necessary to send the information and therefore the delays. G711 - 64 kbps. GSM codec - 13.2 Kbps. G711 - 64 kbps.
en.voipforo.com
VoIP Think - SIP Error Messages and mapping to DSS1
http://en.voipforo.com/SIP/SIP_error_messages.php
3CX PBX and Phone System for Windows. SIP (Session Initiation Protocol). IAX (InterAsterisk eXchange Pr.). SIP vs H.323. QoS (Quality of Service). SER (Sip Express Router). The following table shows the most common errors that can appear in the SIP messages with a detailed explanation. As it has been said they match with the following types:. 4xx - Method Failures. 5xx - Server Failures. 6xx - Global Failures. Table: Mapping between SIP events and DSS1 codes. Value as transmitted in D-channel.
en.voipforo.com
Voip Think - Codecs : codec examples
http://en.voipforo.com/codec/audi_codec.php
3CX PBX and Phone System for Windows. SIP (Session Initiation Protocol). IAX (InterAsterisk eXchange Pr.). SIP vs H.323. QoS (Quality of Service). SER (Sip Express Router). New codecs G.711.1 -G722.2- G729.1. In this page you could hear some codec samples to compare the quality. When the sampling rate is higher the quality is worse. On the other hand, the sampling rate reduces the bandwidth necessary to send the information and therefore the delays. G711 - 64 kbps. GSM codec - 13.2 Kbps. G711 - 64 kbps.
en.voipforo.com
VoIP Foro - VoIP Protocols: SIP H.323 Comparative
http://en.voipforo.com/H323vsSIP.php
3CX PBX and Phone System for Windows. SIP (Session Initiation Protocol). IAX (InterAsterisk eXchange Pr.). SIP vs H.323. QoS (Quality of Service). SER (Sip Express Router). SIP vs H.323 - Comparative. H323 is the more mature of the two, but problems may arise due to lack of flexibility. SIP is currently less defined, but has greater scalability which could ease internet application integration. Which protocol will win out in the end? Call Completion on Busy Subscriber. Large Number of Domains. SIP inhere...
voipthink.com
Voip Think - Codec - G.711 a law and µ or u law - PCM
http://www.voipthink.com/codec/codecs-g711-alaw.php
3CX PBX and Phone System for Windows. SIP (Session Initiation Protocol). IAX (InterAsterisk eXchange Pr.). SIP vs H.323. QoS (Quality of Service). SER (Sip Express Router). New codecs G.711.1 -G722.2- G729.1. Voice and audio signals are analogic, whereas data network is digital. The transformation of the analogic signal to a digital one is made by Analog-to-Digital Converter (ADC). This process of Analog-to-Digital Converter or Pulse Code Modulation (PCM) is done in three steps:. The condition that must ...
en.voipforo.com
Voip Think - Codecs : g711, g729, iLBC, gsm
http://en.voipforo.com/codec/codecs.php
3CX PBX and Phone System for Windows. SIP (Session Initiation Protocol). IAX (InterAsterisk eXchange Pr.). SIP vs H.323. QoS (Quality of Service). SER (Sip Express Router). New codecs G.711.1 -G722.2- G729.1. Voice transmission is analogical, whereas the data network is digital. The process to sample analogical waves into digital information is made by an encoder-decoder (CODEC). Next is a table with the most known codecs in use:. Frame size - The time between packets sent. MOS - (Mean Opinion Score)....
en.voipforo.com
Voip Think - QoS - bandwidth - Causes, solutions and recommended values
http://en.voipforo.com/QoS/QoS_Bandwith.php
3CX PBX and Phone System for Windows. SIP (Session Initiation Protocol). IAX (InterAsterisk eXchange Pr.). SIP vs H.323. QoS (Quality of Service). SER (Sip Express Router). QoS - Quality of Service. Bandwith is limited and it is shared by multiples applications (web, email, files downloading, FTP, .). On Internet bandwith is defined as the bit rate measure of available or consumed data communication resources expressed in bits/second or multiples of it (kilobits/s, megabits/s etc).
azulcom.wordpress.com
melvex | AZULCOM
https://azulcom.wordpress.com/author/melvex
Saltar al contenido principal. Ir a la barra lateral primaria. Saltar a la barra lateral secundaria. Ir a pie de página. Mucho más que VoIP. Archivo del Autor: melvex. Llamar desde un móvil con Android – CSipSimple. Existen multitud de clientes SIP para Android con los que poder llamar y recibir llamadas pero CSipSimple, además de ser gratuito, es uno de los más completos y versátiles que existen en la tienda de aplicaciones Play de Google. Las características principales de este programa son:. Http:/ tw...
voipthink.com
VoIP Think - Codec - G.711.1 - G722.2 - G729.1
http://www.voipthink.com/codec/new-codecs-g7111-g7291.php
3CX PBX and Phone System for Windows. SIP (Session Initiation Protocol). IAX (InterAsterisk eXchange Pr.). SIP vs H.323. QoS (Quality of Service). SER (Sip Express Router). New codecs G.711.1 -G722.2- G729.1. G7111 - G729.1 - G722.1 - G722.1. In last years it is appearing new codec versions of G711, G729 or G722 classic codecs. The new G.711.1 codec has been approved by ITU-T on March 2008. Improves the quality of G.711 in the low frequencies, including the 50-300 Hz band, which is usually not. Wideband ...