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troubleshooting:sip_alg:technicolor [2017/09/15 12:19]
vkaup [How to Disable SIP ALG on Technicolor TG582n SB and TG589vn V3 Modem Router]
troubleshooting:sip_alg:technicolor [2018/04/11 10:28] (current)
vkaup minor wording update on intro text and further reading, add reference to contact us for draytek
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 SIP ALG (Application Layer Gateway) is a feature which is enabled by default in most Technicolor routers and inspects VoIP traffic as it passes through and modifies the messages on-the-fly. SIP ALG (Application Layer Gateway) is a feature which is enabled by default in most Technicolor routers and inspects VoIP traffic as it passes through and modifies the messages on-the-fly.
  
-In few situations this is useful, but in most situations SIP ALG can cause problems using the service. Very often, SIP ALG is poorly implemented causing VoIP messages to be modified in a harmful way or simply corrupts them. In such cases you may experience issues registering your handset, one-way or no audio, unable to receive calls, and issues with [[features:​blf|BLF]] and Message Waiting Indicators.+In few situations this is useful, but in most situations SIP ALG can cause problems using the service. Very often, SIP ALG is poorly implemented causing VoIP messages to be modified in a harmful way or simply corrupts them. In such cases you may experience issues registering your handset, one-way or no audio, unable to receive calls, and issues with [[features:​blf|Busy Lamp Field (BLF)]] and Message Waiting Indicators ​(MWI).
  
 This guide explains how to disable SIP ALG on the following models: This guide explains how to disable SIP ALG on the following models:
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 For the [[technicolor_tg589vac|Technicolor TG589VAC]] or [[technicolor_tg589vac|Technicolor TG588v v2]] please see [[technicolor_tg589vac|this guide]]. For the [[technicolor_tg589vac|Technicolor TG589VAC]] or [[technicolor_tg589vac|Technicolor TG588v v2]] please see [[technicolor_tg589vac|this guide]].
-===== On Windows Vista/​7 ​=====+ 
 +===== Step-by-Step Guide =====
   - Press the Windows Start button and in the search box type in **cmd** and hit //Enter//   - Press the Windows Start button and in the search box type in **cmd** and hit //Enter//
   - Type in\\ <​code>​telnet 192.168.1.254</​code>​ and hit //Enter//\\ //**Note** Windows Vista/7 may not have **Telnet** installed by default. Please click on **Start -> Control Panel -> Programs -> Programs and Features -> Turn Windows Features on or off** -> Ensure **TELNET CLIENT** is checked and click OK.//   - Type in\\ <​code>​telnet 192.168.1.254</​code>​ and hit //Enter//\\ //**Note** Windows Vista/7 may not have **Telnet** installed by default. Please click on **Start -> Control Panel -> Programs -> Programs and Features -> Turn Windows Features on or off** -> Ensure **TELNET CLIENT** is checked and click OK.//
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 ====== Further Reading ====== ====== Further Reading ======
-For further information please contact the retailer you purchased the Technicolor router ​from.+For further information please contact the retailer ​from whom you purchased the Technicolor router.
  
 If you purchased the Technicolor from SureVoIP then SIP ALG will already be disabled. If you purchased the Technicolor from SureVoIP then SIP ALG will already be disabled.
  
-The Technicolor TG582n SB can be purchased from the [[http://​www.surevoip.co.uk/​store/​technicolor/​tg582n-sb|SureVoIP Store]].+We suggest purchasing a router more suitable for business use with a better security track record, such as a DrayTek router. ​[[http://​www.surevoip.co.uk/​contact-surevoip|Contact us]] and we will be happy to provide a quote.