John wrote: > Thanks Steve for your suggestions. >> In China you will generally get either MFC/R2 or EuroISDN. MFC/R2 is >> much more common. >>
> This is exactly my current problem. > NETCOM in Shanghai just told my local contact it is an E1 and that's it. > I have no idea whether it is MFC/R2 or EuroISDN and so there is a lot of > trial and error, not to mention about communicating with the telco. > Is there anyway I could find out from zaptel what the line signal is? International installs are always fun. I have had some luck getting a local employee to relay my questions about provisioning, but all to often the response is 'We use the standard settings...'. At that point I resort to trial and error. I have setup a circuit in Shanghai, it is an E1, CRC4/HDB3 with the telco switch being/or compatible with AT&T 5ESS. You should be able to get Netcom to tell you if the circuit is ISDN or not. Asking if it is a PRI will just confuse them, but they do understand the question 'ISDN or not ISDN' >> The only oddity with EuroISDN is that it often provided without CRC4. >> That doesn't make a lot of sense, but there it is. MFC/R2 seems to be >> universally provided without CRC4 in China. >> > That's great info, Steve. Dan _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
