Bandwidth Usage and QoS - Revision history

Webmaster: /* Bandwidth Usage */

2011-02-04T20:37:13Z

Bandwidth Usage

← Older revision		Revision as of 20:37, 4 February 2011
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	bandwidth usage.		bandwidth usage.

-	Note that G.722 is a wideband (also known as HD voice) codec and is only fully supported in ipbx 2.1.1 and above. Passthrough between two G.722 capable handsets is still possible though.	+	Note that G.722 is a wideband (also known as HD voice) codec and is only fully supported in ipbx 2.1.1 and above. Passthrough between two G.722 capable handsets is still possible in any ipbx v2 release though.

	{\| style="width: 500px;" class="wikitable"		{\| style="width: 500px;" class="wikitable"

Webmaster: /* Bandwidth Usage */

2010-06-17T19:19:56Z

Bandwidth Usage

← Older revision		Revision as of 19:19, 17 June 2010
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	bandwidth usage.		bandwidth usage.

-	Note that G.722 is a wideband (also known as HD voice) codec and ~~will~~ only be fully supported in ipbx 2.1. Passthrough between two G.722 capable handsets is still possible though.	+	Note that G.722 is a wideband (also known as HD voice) codec and is only fully supported in ipbx 2.1.1 and above. Passthrough between two G.722 capable handsets is still possible though.

	{\| style="width: 500px;" class="wikitable"		{\| style="width: 500px;" class="wikitable"
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	\| align="center" \| 87.2 kbit/s		\| align="center" \| 87.2 kbit/s
	\|}		\|}
-

	== Softphones ==		== Softphones ==

Webmaster: /* Softphones */

2009-10-14T15:25:47Z

Softphones

← Older revision		Revision as of 15:25, 14 October 2009
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-
	How much Internet bandwidth do I need for my ipbx calls? This will depend on the codec you are using. The standard codec for ipbx is G.711 (µLaw/aLaw) and this is the recommended codec for use in your local area network.		How much Internet bandwidth do I need for my ipbx calls? This will depend on the codec you are using. The standard codec for ipbx is G.711 (µLaw/aLaw) and this is the recommended codec for use in your local area network.

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	1. If you have a second NIC and appropriately configured, data will travel through the phone network, simply because the softphone will try to register from an IP in the phone network (multi-homed PC). Check your operating system documentation on how to setup multiple network interface cards.		1. If you have a second NIC and appropriately configured, data will travel through the phone network, simply because the softphone will try to register from an IP in the phone network (multi-homed PC). Check your operating system documentation on how to setup multiple network interface cards.

-	2. Depending on your non-voice network usage, the bandwidth on your network might still be plenty to run softphones. A single call only uses about 0.1% of your 100Mbit LAN. In terms of QoS, softphones such as Counterpath's X-Lite/Eyebeam will do QoS tagging (through the operating system IP stack) and if your Ethernet switch does ~~heed the tags~~ ([[wikipedia:IEEE 802.1p\|IEEE 802.1p]]) ~~things should work fine~~.	+	2. Depending on your non-voice network usage, the bandwidth on your network might still be plenty to run softphones. A single call only uses about 0.1% of your 100Mbit LAN. In terms of QoS, softphones such as Counterpath's X-Lite/Eyebeam will do QoS tagging (through the operating system IP stack) and if your Ethernet switch does support QoS tagging ([[wikipedia:IEEE 802.1p\|IEEE 802.1p]]) VoIP data will be prioritized.

Webmaster at 15:24, 14 October 2009

2009-10-14T15:24:23Z

← Older revision		Revision as of 15:24, 14 October 2009
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		+
	How much Internet bandwidth do I need for my ipbx calls? This will depend on the codec you are using. The standard codec for ipbx is G.711 (µLaw/aLaw) and this is the recommended codec for use in your local area network.		How much Internet bandwidth do I need for my ipbx calls? This will depend on the codec you are using. The standard codec for ipbx is G.711 (µLaw/aLaw) and this is the recommended codec for use in your local area network.
		+
		+	== Bandwidth Usage ==

	µLaw (pronounce mu-law, the µ is a Greek mu) and A-Law operate in the same way; that is they both sample audio at 8KHz and taking into account low frequency and anti-alias filters give the standard telephony frequency response of 300Hz to 3400Hz.		µLaw (pronounce mu-law, the µ is a Greek mu) and A-Law operate in the same way; that is they both sample audio at 8KHz and taking into account low frequency and anti-alias filters give the standard telephony frequency response of 300Hz to 3400Hz.

Webmaster: Bandwidth Usage moved to Bandwidth Usage and QoS

2009-10-14T15:23:11Z

Bandwidth Usage moved to Bandwidth Usage and QoS

← Older revision

Revision as of 15:23, 14 October 2009

Webmaster at 15:22, 14 October 2009

2009-10-14T15:22:56Z

← Older revision		Revision as of 15:22, 14 October 2009
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	\| align="center" \| 87.2 kbit/s		\| align="center" \| 87.2 kbit/s
	\|}		\|}
		+
		+
		+	== Softphones ==
		+
		+	There are two options on how to control QoS and bandwidth usage with softphones. You can either add a secondary NIC (network interface card) to your PC or share the bandwidth with your regular non-VoIP data.
		+
		+	1. If you have a second NIC and appropriately configured, data will travel through the phone network, simply because the softphone will try to register from an IP in the phone network (multi-homed PC). Check your operating system documentation on how to setup multiple network interface cards.
		+
		+	2. Depending on your non-voice network usage, the bandwidth on your network might still be plenty to run softphones. A single call only uses about 0.1% of your 100Mbit LAN. In terms of QoS, softphones such as Counterpath's X-Lite/Eyebeam will do QoS tagging (through the operating system IP stack) and if your Ethernet switch does heed the tags ([[wikipedia:IEEE 802.1p\|IEEE 802.1p]]) things should work fine.

Webmaster at 14:12, 29 September 2009

2009-09-29T14:12:33Z

← Older revision		Revision as of 14:12, 29 September 2009
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-	How much Internet bandwidth do I need for my ipbx calls? This will depend on the codec you are using. The standard codec for ipbx is G.711 (~~uLaw~~/aLaw) and this is the recommended codec for use in your local area network.	+	How much Internet bandwidth do I need for my ipbx calls? This will depend on the codec you are using. The standard codec for ipbx is G.711 (µLaw/aLaw) and this is the recommended codec for use in your local area network.
		+
		+	µLaw (pronounce mu-law, the µ is a Greek mu) and A-Law operate in the same way; that is they both sample audio at 8KHz and taking into account low frequency and anti-alias filters give the standard telephony frequency response of 300Hz to 3400Hz.
		+
		+	In aLaw the audio is sampled with a 13 bit resolution and µLaw with 14 bit resolution. These samples are then logarithmically compressed so that in both cases the amplitude is reduced to 8 bits. 8 bits at 8KHz results in 64kbit bandwidth.
		+
		+	If you are using call termination to the PSTN in Europe, Asia and Australia it makes often sense to change your defaults to aLaw within your VoIP network since this is the codec that is used on ISDN lines and with other termination providers.

	When calculating the actual amount of bandwidth, you must take into consideration that every RTP packet has an IP header in addition to the actual data (payload); this header must be transferred along with the data, and therefore requires a certain amount of bandwidth. Since RTP (voice stream) makes use of many small packets, the amount of bandwidth used by IP headers becomes unexpectedly significant. See the table below for estimated		When calculating the actual amount of bandwidth, you must take into consideration that every RTP packet has an IP header in addition to the actual data (payload); this header must be transferred along with the data, and therefore requires a certain amount of bandwidth. Since RTP (voice stream) makes use of many small packets, the amount of bandwidth used by IP headers becomes unexpectedly significant. See the table below for estimated

Webmaster at 14:05, 29 September 2009

2009-09-29T14:05:20Z

← Older revision		Revision as of 14:05, 29 September 2009
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	bandwidth usage.		bandwidth usage.

-	Note that G.722 is a wideband (also known as HD voice) codec and will only be supported in ipbx 2.1.	+	Note that G.722 is a wideband (also known as HD voice) codec and will only be fully supported in ipbx 2.1. Passthrough between two G.722 capable handsets is still possible though.

	{\| style="width: 500px;" class="wikitable"		{\| style="width: 500px;" class="wikitable"

Webmaster at 15:13, 14 July 2009

2009-07-14T15:13:26Z

← Older revision		Revision as of 15:13, 14 July 2009
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	! Nominal Bandwidth		! Nominal Bandwidth
	\|-		\|-
-	\| [[wikipedia:G.711\|~~G711~~]]	+	\| [[wikipedia:G.711\|G.711]]
	\| align="center" \| 64 kbit/s		\| align="center" \| 64 kbit/s
	\| align="center" \| 87.2 kbit/s		\| align="center" \| 87.2 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.729\|~~G729~~]]	+	\| [[wikipedia:G.729\|G.729]]
	\| align="center" \| 8 kbit/s		\| align="center" \| 8 kbit/s
	\| align="center" \| 31.2 kbit/s		\| align="center" \| 31.2 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.723\|~~G723~~.1]]	+	\| [[wikipedia:G.723\|G.723.1]]
	\| align="center" \| 6.4 kbit/s		\| align="center" \| 6.4 kbit/s
	\| align="center" \| 21.9 kbit/s		\| align="center" \| 21.9 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.723\|~~G723~~.1]]	+	\| [[wikipedia:G.723\|G.723.1]]
	\| align="center" \| 5.3 kbit/s		\| align="center" \| 5.3 kbit/s
	\| align="center" \| 20.8 kbit/s		\| align="center" \| 20.8 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.722\|~~G722~~]]	+	\| [[wikipedia:G.722\|G.722]]
	\| align="center" \| 48 kbit/s		\| align="center" \| 48 kbit/s
	\| align="center" \| 71.2 kbit/s		\| align="center" \| 71.2 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.722\|~~G722~~]]	+	\| [[wikipedia:G.722\|G.722]]
	\| align="center" \| 56 kbit/s		\| align="center" \| 56 kbit/s
	\| align="center" \| 79.2 kbit/s		\| align="center" \| 79.2 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.722\|~~G722~~]]	+	\| [[wikipedia:G.722\|G.722]]
	\| align="center" \| 64 kbit/s		\| align="center" \| 64 kbit/s
	\| align="center" \| 87.2 kbit/s		\| align="center" \| 87.2 kbit/s
	\|}		\|}

Webmaster at 15:12, 14 July 2009

2009-07-14T15:12:55Z

← Older revision		Revision as of 15:12, 14 July 2009
Line 13:		Line 13:
	! Nominal Bandwidth		! Nominal Bandwidth
	\|-		\|-
-	\| G711	+	\| [[wikipedia:G.711\|G711]]
	\| align="center" \| 64 kbit/s		\| align="center" \| 64 kbit/s
	\| align="center" \| 87.2 kbit/s		\| align="center" \| 87.2 kbit/s
	\|-		\|-
-	\| G729	+	\| [[wikipedia:G.729\|G729]]
	\| align="center" \| 8 kbit/s		\| align="center" \| 8 kbit/s
	\| align="center" \| 31.2 kbit/s		\| align="center" \| 31.2 kbit/s
	\|-		\|-
-	\| G723.1	+	\| [[wikipedia:G.723\|G723.1]]
	\| align="center" \| 6.4 kbit/s		\| align="center" \| 6.4 kbit/s
	\| align="center" \| 21.9 kbit/s		\| align="center" \| 21.9 kbit/s
	\|-		\|-
-	\| G723.1	+	\| [[wikipedia:G.723\|G723.1]]
	\| align="center" \| 5.3 kbit/s		\| align="center" \| 5.3 kbit/s
	\| align="center" \| 20.8 kbit/s		\| align="center" \| 20.8 kbit/s
	\|-		\|-
-	\| G722 ~~48 kbit/s~~	+	\| [[wikipedia:G.722\|G722]]
	\| align="center" \| 48 kbit/s		\| align="center" \| 48 kbit/s
	\| align="center" \| 71.2 kbit/s		\| align="center" \| 71.2 kbit/s
	\|-		\|-
-	\| G722 ~~56 kbit/s~~	+	\| [[wikipedia:G.722\|G722]]
	\| align="center" \| 56 kbit/s		\| align="center" \| 56 kbit/s
	\| align="center" \| 79.2 kbit/s		\| align="center" \| 79.2 kbit/s
	\|-		\|-
-	\| G722 ~~64 kbit/s~~	+	\| [[wikipedia:G.722\|G722]]
	\| align="center" \| 64 kbit/s		\| align="center" \| 64 kbit/s
	\| align="center" \| 87.2 kbit/s		\| align="center" \| 87.2 kbit/s
	\|}		\|}

← Older revision		Revision as of 15:13, 14 July 2009
Line 13:		Line 13:
	! Nominal Bandwidth		! Nominal Bandwidth
	\|-		\|-
-	\| [[wikipedia:G.711\|~~G711~~]]	+	\| [[wikipedia:G.711\|G.711]]
	\| align="center" \| 64 kbit/s		\| align="center" \| 64 kbit/s
	\| align="center" \| 87.2 kbit/s		\| align="center" \| 87.2 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.729\|~~G729~~]]	+	\| [[wikipedia:G.729\|G.729]]
	\| align="center" \| 8 kbit/s		\| align="center" \| 8 kbit/s
	\| align="center" \| 31.2 kbit/s		\| align="center" \| 31.2 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.723\|~~G723~~.1]]	+	\| [[wikipedia:G.723\|G.723.1]]
	\| align="center" \| 6.4 kbit/s		\| align="center" \| 6.4 kbit/s
	\| align="center" \| 21.9 kbit/s		\| align="center" \| 21.9 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.723\|~~G723~~.1]]	+	\| [[wikipedia:G.723\|G.723.1]]
	\| align="center" \| 5.3 kbit/s		\| align="center" \| 5.3 kbit/s
	\| align="center" \| 20.8 kbit/s		\| align="center" \| 20.8 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.722\|~~G722~~]]	+	\| [[wikipedia:G.722\|G.722]]
	\| align="center" \| 48 kbit/s		\| align="center" \| 48 kbit/s
	\| align="center" \| 71.2 kbit/s		\| align="center" \| 71.2 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.722\|~~G722~~]]	+	\| [[wikipedia:G.722\|G.722]]
	\| align="center" \| 56 kbit/s		\| align="center" \| 56 kbit/s
	\| align="center" \| 79.2 kbit/s		\| align="center" \| 79.2 kbit/s
	\|-		\|-
-	\| [[wikipedia:G.722\|~~G722~~]]	+	\| [[wikipedia:G.722\|G.722]]
	\| align="center" \| 64 kbit/s		\| align="center" \| 64 kbit/s
	\| align="center" \| 87.2 kbit/s		\| align="center" \| 87.2 kbit/s
	\|}		\|}

← Older revision		Revision as of 15:12, 14 July 2009
Line 13:		Line 13:
	! Nominal Bandwidth		! Nominal Bandwidth
	\|-		\|-
-	\| G711	+	\| [[wikipedia:G.711\|G711]]
	\| align="center" \| 64 kbit/s		\| align="center" \| 64 kbit/s
	\| align="center" \| 87.2 kbit/s		\| align="center" \| 87.2 kbit/s
	\|-		\|-
-	\| G729	+	\| [[wikipedia:G.729\|G729]]
	\| align="center" \| 8 kbit/s		\| align="center" \| 8 kbit/s
	\| align="center" \| 31.2 kbit/s		\| align="center" \| 31.2 kbit/s
	\|-		\|-
-	\| G723.1	+	\| [[wikipedia:G.723\|G723.1]]
	\| align="center" \| 6.4 kbit/s		\| align="center" \| 6.4 kbit/s
	\| align="center" \| 21.9 kbit/s		\| align="center" \| 21.9 kbit/s
	\|-		\|-
-	\| G723.1	+	\| [[wikipedia:G.723\|G723.1]]
	\| align="center" \| 5.3 kbit/s		\| align="center" \| 5.3 kbit/s
	\| align="center" \| 20.8 kbit/s		\| align="center" \| 20.8 kbit/s
	\|-		\|-
-	\| G722 ~~48 kbit/s~~	+	\| [[wikipedia:G.722\|G722]]
	\| align="center" \| 48 kbit/s		\| align="center" \| 48 kbit/s
	\| align="center" \| 71.2 kbit/s		\| align="center" \| 71.2 kbit/s
	\|-		\|-
-	\| G722 ~~56 kbit/s~~	+	\| [[wikipedia:G.722\|G722]]
	\| align="center" \| 56 kbit/s		\| align="center" \| 56 kbit/s
	\| align="center" \| 79.2 kbit/s		\| align="center" \| 79.2 kbit/s
	\|-		\|-
-	\| G722 ~~64 kbit/s~~	+	\| [[wikipedia:G.722\|G722]]
	\| align="center" \| 64 kbit/s		\| align="center" \| 64 kbit/s
	\| align="center" \| 87.2 kbit/s		\| align="center" \| 87.2 kbit/s
	\|}		\|}