On Mon, Jan 14, 2008 at 01:25:13PM -0000, Chris Bagnall wrote: > > Or I have to use an FXS to SIM adaptor? If yes, then > > anyone advise a models and prices? > > I'll leave others to suggest models and prices, but in my experience, > you're better with a SIP->GSM gateway and cutting out the analogue > loop altogether. They're a bit more expensive, but it'll save you > many hours playing with echo cancellation and gain settings on the > FXS module.
You don't have to have analogue loop. There are a number of GSM PCI adapters, and all of them seem to have a separate signalling channel between the GSM device and Asterisk. For instance, the GSM support included in bristuff (used for the Junghanns GSM adapter) sets each GSM port as an ISDN-like device with just one B channel but still with one D channel. AFAIK, both the Bero.net and the VoiSmart GSM devices are likewise digital. -- Tzafrir Cohen icq#16849755 jabber:[EMAIL PROTECTED] +972-50-7952406 mailto:[EMAIL PROTECTED] http://www.xorcom.com iax:[EMAIL PROTECTED]/tzafrir _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users