![]() ![]() Zoiper no transports left to try 503 how to#They said no need of ip route then how to resolve this problem?I have only basic static configuration on my router. firm left many unable to make calls after changes to its landline access. Also, check if the routing device is blocking the ports used by Zoiper, which are list below, and if it supports SIP-ALG, disable it. ![]() SIP 503- Transport failure: no transports left to try. 3 Answers 2 votes Hello, Try to disable STUN when you are connecting via WiFi. They said something is blocked on your router, and also they said create the rules and please allow the ports LAN to WAN & WAN to LAN.(I don't know how to allow) It indicates that the 503 Service Unavailable was been generated by SME. soft phone(zoiper) is working fine for with out cisco router I tried directly ISP connection to my. We don't have any firewalls but in my configuration I had one accesslist:Īccess-list 20 permit 192.168.1.0 0.0.0.255(if I am removing this accesslist internet is not working)Įxactly what happened is with out cisco router I tried directly ISP connection to my laptop it is working fine but whenever through cisco 2911 router to my laptop it is not working(soft phone is not registered to SIP provider) Where I will check firewall feature enabled or not?ģCX is working fine for with out cisco router I tried directly ISP connection to my laptop it is working fine but whenever through cisco 2911 router to my laptop it is not working(soft phone is not registered to SIP provider) ![]()
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