I am sorry but I am from data networking backgroud and new to VOIP. I need your assistance to resolve an issue with one of my client with inbound call through SIP router. Pelase forgive me if I am unable to expalin it clearly.
My client has a Cisco 2811 router to terminate SIP calls at their premises. They are using thrid party Call agent which is hosted with services provider. All configuration seems ok on SP side. The problem is they can place calls but can't receive Inboud calls. They are getting error: (400 Bad Request==> invalid Host)
I have the current configuration for your analysis. I would appreciate it if could someone please check and advise.