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?
> 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. > > You said you are sure the card is OK. How did you determine that? Have > you tried a loopback cable between two its its ports? Are you sure the > cable you have used is OK? > I am quite sure that the Digium card is fine because it is a new card from Digium and I sent it from here. My experience with Digium cards has been good. As far as the cable goes, this is a bit complicated. The way it works is the telco delivers a fibre optic cable to the floor and the fibre terminates on a fibre optic multiplexer. Then the multiplexer is connected to a Fast Ethernet to E1 converter which has a RJ45 port. We then connect this RJ45 port to the TE412P port. Anyway, the quality of the data cables in China appears to be really bad and I will have to send some better quality cables from down under to them to try. _______________________________________________ -- 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
