Thanks for the info Gordon. Just what I was looking for. I think I have seen one of the telecom FM units, it actually has a whole phone inside :) In my end of the world things are quite different :) Portech costs an average of 160E per port, and the cost of the GSM adapter including the cost of the FXS/FXO port is about 50E.
Sasa On Tue, Jun 23, 2009 at 1:17 PM, Gordon Henderson < gordon+aster...@drogon.net <gordon%2baster...@drogon.net>> wrote: > On Tue, 23 Jun 2009, Sasa Bobek wrote: > > The price difference is HUGE. Analog i about 66% cheaper. >> > > But you then need some sort of analogue adapter/interface to feed the > analogue GSM module... > > Although if you've already got this, it's a obviously a cheaper option. > > However, here in the UK, the price difference isn't that bad, but it might > be that the number of ports you'rea fter makes a difference - e.g. a 2-port > SIP Portech units is £321, a single (analogue) port Telecom FM unit is £119. > (so actually slightly cheaper for 2 ports with SIP Ethernet Interfaces > here), but if you're looking at a dozen channels it might well be > different.. > > However - to your original question - I've used both the Portech and > Telecom FM units (on a TDM 400 card) and not really been able to tell the > difference. The Portech dials quicker, the Telecom FM obviously needs to get > the number passed via DTMF, but since GSM is ... GSM which is pretty poor > speech quality to start with, it didn't make any difference I could tell. > > Gordon > > > > >> On Tue, Jun 23, 2009 at 12:44 PM, Gordon Henderson < >> gordon+aster...@drogon.net <gordon%2baster...@drogon.net> < >> gordon%2baster...@drogon.net <gordon%252baster...@drogon.net>>> wrote: >> >> On Tue, 23 Jun 2009, Sasa Bobek wrote: >>> >>> Hi all, >>>> We have been planing for a long time to set up GSM mobile trunks for >>>> termination, and were planing on going with analog GSM adapters >>>> connected >>>> >>> to >>> >>>> a VoIP gateway. Should we be concerned with such a set-up as far as >>>> >>> voice >>> >>>> quality and other issues are concerned? Any experiences with GSM >>>> >>> terminal >>> >>>> chipsets? >>>> >>> >>> Why not SIP based GSM devices? e.g. Portech? >>> >>> Gordon >>> >>> _______________________________________________ >>> -- 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 >>> >>> > _______________________________________________ > -- 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 >
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