We are using SIP trunks in the UK and in the US, will be deploying SIP trunks in Asia within weeks/month. It works reliably, but I understand there are some interactions with conferenceing and faxing.
Having never used or worked with SIP, what is my best way to work this out?? We want to get some trunks in our lab to start testing and getting familiar with the technology before we roll it out....Any help you could provide would be GREATLY appreciated!!!
Have you tried using Meet Me Conference over those SIP trunks? I've got an installation where the MMC gets multiple prompts. The pass code is valid, the user enters the conference, then gets prompted again, then gets dropped from the conference. If a call comes in on a ISDN trunk to the same vector, no problems at all.
DTMF tones are verified and you get added to the conference successfully. About five seconds later you're prompted for the passcode again, then dropped. If a call comes in a TDM trunk to the same vector, no problem, no drops.
Not sure if they are the best because I haven't used them myself but I know people that work there who work hard to earn business and keep customers happy.
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