HiHow can softphone traverse Firewall?Thanks!!!

I setup AutoAttendant which shiped with CCM 3.3,I found a problem, I can't sure it's my wrong setup or it's a system BUG. Anyone meet this problem ?How resolved?What's aa.aef ?Problem Description:From PSTN make a call to company, AutoAttendant auto a...

Customer require:In Hotel,From PSTN call to company, then use company phone make Long Distance call.Network structure:Callmanager 3.3 + Unity 4.0 + E1(Cisco2651XM H.323 Gateway).Any help? Thanks!!!

Hi I meet some problems on CIPT.1.IP Phone call to PSTN, hear a lot of noice, it's so sound than can't bear, but the external side, it's acceptable.2. IP Phone call to PSTN, user have to press "#" or wait a lot of time to complete a dial, how to chan...