Thanks Moises, noted! With regards, Sirish From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Moises Silva Sent: Tuesday, 11 December 2012 4:22 PM To: FreeSWITCH Users Help Subject: Re: [Freeswitch-users] FreeSWITCH+Sangoma with dialup modems On Mon, Dec 10, 2012 at 9:24 PM, Sirish Masur Mohan <Sirish.MasurMohan@oa.com.au<mailto:Sirish.MasurMohan@oa.com.au>> wrote: Hi Moises, Thanks for the reply. I have been able to resolve this issue – looks like I had to explicitly choose the modem carrier (1200) using the +MS command. However, curious to know a bit more on the echo canceller that you are referring to – we are using the Sangoma card with echo canceller, and I haven’t explicitly turned it off! Echo cancellation is not a good idea in data calls. Mind you, depending on the type of data call there is variable tolerance. Also, some data calls (ie fax) start by sending a well-known tone that Sangoma echo canceller recognizes and then disables itself (see CED tone here: http://telecom.tbi.net/fax-call.htm). If it's working for you, good :) ... if you start having issues with some calls succeeding some not, now you know another thing to try (turn off the ec). Moises Silva Manager, Software Engineering msilva@sangoma.com<mailto:msilva@sangoma.com> Sangoma Technologies 100 Renfrew Drive, Suite 100, Markham, ON L3R 9R6 Canada t. +1 800 388 2475 (N. America) t. +1 905 474 1990 x128 f. +1 905 474 9223 <http://www.sangoma.com/contact?utm_source=signature&utm_medium=email&utm_campaign=email+signatures> Products | Solutions | Events | Contact | Wiki | Facebook | Twitter`| | YouTube<http://www.sangoma.com/contact?utm_source=signature&utm_medium=email&utm_campaign=email+signatures> <http://www.sangoma.com/contact?utm_source=signature&utm_medium=email&utm_campaign=email+signatures>