Hardware v1 Firmware 3.17.0 Build 20151009 Rel.61423n You're correct about the lack of a distinct SIP ALG option--the absence thereof is what led to my post. W/r/t the DMZ option, I've considered...

Model : Hardware Version : Firmware Version : ISP : Starting up a new small business office, with a VOIP phone system. The VOIP provider is adamant about proper router settings, insisting that SIP...