Hi, I am having issues sending and receiving fax on my asterisk setup. Currently I have a server that has 2 x E1 TDM cards one is sangoma and the other one is openvox. Both support echo cancellation. One of the e1 is connected to our telco provider via mfcr2 where all our incoming calls originate. On the other end is a pri connection going to HICOM PABX where the local attached to a fax is connected. Fax passing thru this connection are not getting thru and always getting drop. FYI: all of the 8xE1s are currently up with two using mfcr2 and the rest is ISDN pri. Server is spec is Dual Xeon 3.00GHz 2 GIG RAM Load Average: less than 1 Dahdi configuration: context=from-pstn signalling=fxs_ks rxwink=300 ; Atlas seems to use long (250ms) winks usecallerid=yes hidecallerid=no callwaiting=yes usecallingpres=yes callwaitingcallerid=yes threewaycalling=yes transfer=yes canpark=yes cancallforward=yes callreturn=yes echocancel=yes echocancelwhenbridged=yes faxdetect=both faxbuffers=>6,full echotraining=800 rxgain=0.0 txgain=0.0 callgroup=1 pickupgroup=1 ;Uncomment these lines if you have problems with the disconection of your analog lines ;busydetect=yes ;busycount=3 immediate=no ### PRI group=0,11 context=a2billing switchtype=euroisdn priindication=inband overlapdial=yes nsf=none signalling=pri_net channel => 1-15,17-31 context = default group = 63 ### MFCR2 group=2,12 context=outrt-005-IN_E1P2_PBX_JLB signalling = mfcr2 mfcr2_variant=ph mfcr2_max_ani=10 mfcr2_max_dnis=4 mfcr2_get_ani_first=yes mfcr2_category=national_subscriber mfcr2_logdir=span2 ;mfcr2_call_files=yes channel => 32-46 channel => 48-62 context = default I am not sure if I miss anything in the configuration or there something I need to enable or include in the extensions.conf Any information is much appreciated. Regards, Mac
On Fri, Feb 18, 2011 at 3:23 AM, leonimar cape <leo_mac_ph at yahoo.com> wrote:> Hi, > > I am having issues sending and receiving fax on my asterisk setup. > > Currently I have a server that has 2 x E1 TDM cards one is sangoma and the > other > > one is openvox. Both support echo cancellation. > > One of the e1 is connected to our telco provider via mfcr2 where all our > incoming calls originate. On the other end is a pri connection going to > HICOM > PABX where the local attached to a fax is connected. Fax passing thru this > connection are not getting thru and always getting drop. > > FYI: all of the 8xE1s are currently up with two using mfcr2 and the rest is > ISDN > > pri. >My guess is that using 2 different cards from 2 different manufacturers for FAX (which is sensitive to time slips) is probably a bad idea because most likely is not possible to synchronize their clocks. If you were using 2 Sangoma ports you can sync the ports with the TE_REF_CLOCK parameter. Moises Silva Senior Software Engineer Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON L3R 9R6 Canada t. 1 905 474 1990 x128 | e. moy at sangoma.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20110219/4f353bd8/attachment.htm>
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Thanks for the insight will try that one. Is there any suggested value for this parameter that best work well on fax? Regards, Mac> >From: Moises Silva <moises.silva at gmail.com> >To: Asterisk Users Mailing List - Non-Commercial Discussion ><asterisk-users at lists.digium.com> >Sent: Saturday, February 19, 2011 10:05:45 PM >Subject: Re: [asterisk-users] FAX on PRI to MFCR2 > > >On Fri, Feb 18, 2011 at 3:23 AM, leonimar cape <leo_mac_ph at yahoo.com> wrote: > >Hi, >> >>I am having issues sending and receiving fax on my asterisk setup. >> >>Currently I have a server that has 2 x E1 TDM cards one is sangoma and the >other >> >>one is openvox. Both support echo cancellation. >> >>One of the e1 is connected to our telco provider via mfcr2 where all our >>incoming calls originate. On the other end is a pri connection going to HICOM >>PABX where the local attached to a fax is connected. Fax passing thru this >>connection are not getting thru and always getting drop. >> >>FYI: all of the 8xE1s are currently up with two using mfcr2 and the rest is >ISDN >> >>pri. >>My guess is that using 2 different cards from 2 different manufacturers for FAX (which is sensitive to time slips) is probably a bad idea because most likely is not possible to synchronize their clocks. If you were using 2 Sangoma ports you can sync the ports with the TE_REF_CLOCK parameter. Moises Silva Senior Software Engineer Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON L3R 9R6 Canada t. 1 905 474 1990 x128 | e. moy at sangoma.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20110221/bba18585/attachment.htm>