Talk:G.703: Difference between revisions
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G.703 is a standard which originally described voice over digital networks. It's a CCITT recommendation which is associated with the PCM standard. Voice to digital conversion according to PCM requires a bandwidth of 64 kbps (+/- 100 ppm), resulting in the basic unit for G.703. By multiplication this results in e.g. T1 (1544 kbps) and E1 (2048 kbps). |
G.703 is a standard which originally described voice over digital networks. It's a CCITT recommendation which is associated with the PCM standard. Voice to digital conversion according to PCM requires a bandwidth of 64 kbps (+/- 100 ppm), resulting in the basic unit for G.703. By multiplication this results in e.g. T1 (1544 kbps) and E1 (2048 kbps). |
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Modern networks are working with voice and data and so is G.703. <small>—The preceding [[Wikipedia:Sign your posts on talk pages|unsigned]] comment was added by [[User:202.177.176.83|202.177.176.83]] ([[User talk:202.177.176.83|talk]] • [[Special:Contributions/202.177.176.83|contribs]]) {{{2|}}}.</small> |
Modern networks are working with voice and data and so is G.703. <small>—The preceding [[Wikipedia:Sign your posts on talk pages|unsigned]] comment was added by [[User:202.177.176.83|202.177.176.83]] ([[User talk:202.177.176.83|talk]] • [[Special:Contributions/202.177.176.83|contribs]]) {{{2|}}}.</small> |
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It's too simplistic to state it uses 120 Ohm or 75 Ohm. The "standard" choice of impedance is dependant on the region. In Europe it's typical to use 75 Ohms in other regions it's more typically 120 Ohm. The article should just state that both are used. <span style="font-size: smaller;" class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/192.91.191.29|192.91.191.29]] ([[User talk:192.91.191.29|talk]]) 11:26, 13 April 2011 (UTC)</span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot--> |
It's too simplistic to state it uses 120 Ohm or 75 Ohm. The "standard" choice of impedance is dependant on the region. In Europe it's typical to use 75 Ohms in other regions it's more typically 120 Ohm. The article should just state that both are used. <span style="font-size: smaller;" class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/192.91.191.29|192.91.191.29]] ([[User talk:192.91.191.29|talk]]) 11:26, 13 April 2011 (UTC)</span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot--> |
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== G.703 does not define a PCM standard == |
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G.703 is only a physical level specification. Although the recommendation makes passing references to PCM, it does not specify how that is encoded. As such the article seems to have been written on a false premise. [[User:David Woolley|David Woolley]] ([[User talk:David Woolley|talk]]) 11:57, 20 December 2022 (UTC) |
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Latest revision as of 05:59, 2 February 2024
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G.703 is a standard which originally described voice over digital networks. It's a CCITT recommendation which is associated with the PCM standard. Voice to digital conversion according to PCM requires a bandwidth of 64 kbps (+/- 100 ppm), resulting in the basic unit for G.703. By multiplication this results in e.g. T1 (1544 kbps) and E1 (2048 kbps). Modern networks are working with voice and data and so is G.703. —The preceding unsigned comment was added by 202.177.176.83 (talk • contribs) .
G.703 is far more commonly transported over 75 Ohm and terminated using either BNCs or Type43 connectors not 120 Ohm/RJ45 as stated in the article. 217.36.0.13 15:03, 26 March 2007 (UTC)
Oh, I don't know, Telstra - Australia largest phone provider use 120 Ohm to provide their megalink product using G.703. In fact I haven't seen it provided any other way. 203.13.128.101 (talk) 18:23, 22 February 2009 (UTC)
It's too simplistic to state it uses 120 Ohm or 75 Ohm. The "standard" choice of impedance is dependant on the region. In Europe it's typical to use 75 Ohms in other regions it's more typically 120 Ohm. The article should just state that both are used. —Preceding unsigned comment added by 192.91.191.29 (talk) 11:26, 13 April 2011 (UTC)
G.703 does not define a PCM standard
[edit]G.703 is only a physical level specification. Although the recommendation makes passing references to PCM, it does not specify how that is encoded. As such the article seems to have been written on a false premise. David Woolley (talk) 11:57, 20 December 2022 (UTC)