SIP ALG
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SIP ALG
(Session Initiation Protocol Application-Level Gateway) A function in a router that allows VoIP packets to traverse the network's firewall. Because Internet-based telephony emerged so quickly, the SIP ALG function was often enabled by default in many consumer-based wireless routers. Because various implementations caused problems, the ALG setting later defaulted to "disabled." See SIP, SIP proxy and STUN. |
| Turn It Off in the Router Control Panel |
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| SIP ALG was disabled in order to allow VoIP calls to reach the PBX in this installation. |
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| Is ALG On or Off? |
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| If users cannot access their router's control panel to find out if ALG is turned on, this Windows utility from RingLogix does the job. |
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