Andreas Wahlert <andreas.wahlert@xxxxxx> writes: > Wolfgang S. Rupprecht wrote: >> Guy Fraser <guy@xxxxxxxxxxxx> writes: >> >>>What kinds of IP phones are you using? >>> >>>If you have POTS connections waht devices are you using? >>> >>> We have tried to use a couple of different IP phones, but they >>> would only talk to the same brand using their internal gatekeeper >>> software. >> The cheap phones I like the best are the grandstream budgetone >> (around >> $65). I also have a supra spa-3000 for answering the POTS line and >> taking messages. (my motto: anything worth build is worth >> over-building. ;-)) I also have sipura spa-841, but the audio path is >> very noisy. I haven't had any show-stopper interoperability problems >> that a bit of playing with the options settings couldn't fix. I do >> use ulaw (standard US phone) encoding so that may help. Every phone >> and VOIP provider seems to do ulaw even if it may not be their >> preferred encoding. >> OB open-source: these phones follow the voip rfc's and can talk to >> open-source sip phones (unlike the proprietary stuff like skype which >> is in a world to itself.) >> -wolfgang > > can you tell me your networkinfrastructure with your asterisk?? > > Do you have an public IP on your asterisk interface?? Or do you have > natting behind a firewall?? I have real external IP addresses for all voip phones and for asterisk. The phones are outside the firewall and asterisk is running on the same box that does the firewalling and NAT-ing for a bunch of computers that don't need real addresses. I didn't even try to get voip working with NAT. Sorry for not mentioning it sooner. I didn't realize you were trying to NAT things. -wolfgang -- Wolfgang S. Rupprecht http://www.wsrcc.com/wolfgang/
