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troubleshooting:sip_alg:tp-link_td-w8960n [2017/09/25 17:07]
vkaup [How to Disable SIP ALG on TP-LINK TD-W8960n and TP-LINK TD-W8968 Modem Router] add 9970 ref in heading
troubleshooting:sip_alg:tp-link_td-w8960n [2018/04/13 14:29] (current)
vkaup [How to Disable SIP ALG on the TP-LINK TD-W8960n, TP-LINK TD-W8968 and TP-LINK TD-W9970 Modem Router] normalise intro text
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 SIP ALG (Application Layer Gateway) is a feature which is enabled by default in most TP-LINK 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 TP-LINK 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).
  
 For our Hosted VoIP service, including out Single User services, SIP ALG must be disabled on your TP-LINK router. For our Hosted VoIP service, including out Single User services, SIP ALG must be disabled on your TP-LINK router.