IMHO - Although PRI is preferable, most of my clients have a small number of lines (2-4) supplemented with VoIP lines for out-going calls. For these clients it is too expensive to lease a PRI. Provided analog lines are of good quality then an ATA device (with echo cancellation) works reasonably well. For just one or two analog lines I recommend using SNR (single number reach) forwarded to a VoIP line.
Henry On Tue, Oct 11, 2011 at 4:23 PM, Stephan Monette <[email protected]>wrote: > Hey John, > > No they didn't had to do this because the audio path wasn't getting > converted. On the legacy PBX, the audio path was still analog, but > signalling from the phone to the PBX was digital (Key systems). > > With VoIP, the ATA or PBX has to convert the analog audio signal into > digital signal and this is where most of the issues are occurring. > > Thanks, > > > -- > Stephan Monette > > Business Development Director > Primus Business Services. > Tel.: 613-656-2980 > > > > > On 11-10-11 4:19 PM, "John Van Ostrand" <[email protected]> wrote: > > >Stephan, > > > >Did integrators have to do this with analog PBXs too? I don't recall > >those needing tweaking throughout the year. What's the difference between > >that PBX's FXO lines and ATAs? > > > > > This message contains confidential information and is intended only for the > individual named. If you are not the named addressee you should not > disseminate,distribute or copy this e-mail. Please notify the sender > immediately by e-mail if you have received this e-mail by mistake and delete > this e-mail from your system. E-mail transmission cannot be guaranteed to be > secure or error-free as information could be intercepted, corrupted, lost, > destroyed, arrive late or incomplete, or contain viruses. The sender > therefore does not accept liability for any errors or omissions in the > contents of this message, which arise as a result of e-mail transmission. If > verification is required please request a hard-copy version. > > ----- Original Message ----- > >> Hey John, > >> > >> I used several FXO ATAs in the past and they all had different issues > >> like > >> DTMF, echo, static,... I tested Mediatrix, Quintum and they both had > >> issues that customers didn't like. > >> > >> A lot of our Asterisk PBX integrators seems to prefer using a PC with > >> Asterisk and Sangoma Analog FXO boards. They always use the hardware > >> base > >> echo canceller with the Sangoma cards. > >> > >> Because of the analog phone lines, you always need to tweak and adjust > >> audio levels on each line. You will find that you need to re-adjust > >> the > >> line levels 2-3 times a year to get ride of some issues depending on > >> the > >> weather! > >> > >> Sangoma has really good support on this matter. > >> > >> Some PBX integrators got tired of tweaking FXO ports and refuse to > >> sell > >> systems with FXO lines! They only sell VoIP or PRI-T1 services with > >> their > >> PBX. With the rates of PRI-T1 being sub $500.00 (we have a few > >> customers > >> that purchased PRI-T1 form Primus at sub $500/month!), many > >> integrators > >> pushes the customer to get rid of analog lines (and got rid of the > >> headaches too!). > >> > >> I would be curious to hear who has perfect results with FXO lines on > >> Asterisk with no re-tuning on all their installation (not just one > >> install)! > >> > >> Good luck. > >> > >> -- > >> Stephan Monette > >> > >> Business Development Director > >> Primus Business Services. > >> Tel.: 613-656-2980 > >> > >> > >> > >> > >> On 11-10-11 4:02 PM, "John Van Ostrand" <[email protected]> wrote: > >> > >> >Hi, > >> > > >> >We are struggling with a Cisco (nee Sipura) 8800. It's not capturing > >> >DMTF > >> >reliably on inbound calls to our automated attendant (asterisk) and > >> >it > >> >happens only with certain callers and never with other callers. The > >> >first > >> >one, two or three digits will be missing so a caller pressing 5102 > >> >could > >> >get option 1, 0 or 2 instead of my extension. It also is more > >> >reliable > >> >when callers wait for silence between prompts before dialling. > >> >Flipping > >> >between AVT and inband doesn't change much. We gained better > >> >reliability > >> >by reducing the gain on the outgoing audio. When AVT is configured, > >> >we > >> >can see missing SIP event packets and the 8800 doesn't log the digit > >> >either so it's clear that it's just unable to recognize the tones. > >> > > >> >Is the 8800 reliable? What is a good solid ATA? What about a > >> >Mediatrix > >> >1204? Any other suggestions? We need a 4 port FXO ATA. > >> > > >> >Thanks, > >> > > >> >-- > >> >John Van Ostrand > >> >CTO, co-CEO > >> >Net Direct Inc. > >> >564 Weber St. N. Unit 12, Waterloo, ON N2L 5C6 > >> >Ph: 866-883-1172 x5102 > >> >Fx: 519-883-8533 > >> > > >> >Linux Solutions / IBM Hardware > >> > > >> > > >> >--------------------------------------------------------------------- > >> >To unsubscribe, e-mail: [email protected] > >> >For additional commands, e-mail: [email protected] > >> > > >> > >> > >> This message contains confidential information and is intended only > >> for the individual named. If you are not the named addressee you > >> should not disseminate,distribute or copy this e-mail. Please notify > >> the sender immediately by e-mail if you have received this e-mail by > >> mistake and delete this e-mail from your system. E-mail transmission > >> cannot be guaranteed to be secure or error-free as information could > >> be intercepted, corrupted, lost, destroyed, arrive late or incomplete, > >> or contain viruses. The sender therefore does not accept liability for > >> any errors or omissions in the contents of this message, which arise > >> as a result of e-mail transmission. If verification is required please > >> request a hard-copy version. > >> > >> > >> > >>------------------------------------------------------------------------- > >>- > >> This electronic message contains information from Primus > >> Telecommunications Canada Inc. ("PRIMUS") , which may be legally > >> privileged and confidential. The information is intended to be for the > >> use of the individual(s) or entity named above. If you are not the > >> intended recipient, be aware that any disclosure, copying, > >> distribution or use of the contents of this information is prohibited. > >> If you have received this electronic message in error, please notify > >> us by telephone or e-mail (to the number or address above) > >> immediately. Any views, opinions or advice expressed in this > >> electronic message are not necessarily the views, opinions or advice > >> of PRIMUS. It is the responsibility of the recipient to ensure that > >> any attachments are virus free and PRIMUS bears no responsibility for > >> any loss or damage arising in any way from the use thereof.The term > >> "PRIMUS" includes its affiliates. > >> > >>------------------------------------------------------------------------- > >>- > >> Pour la version en français de ce message, veuillez voir > >> http://www.primustel.ca/fr/legal/cs.htm > > > >-- > >John Van Ostrand > >CTO, co-CEO > >Net Direct Inc. > >564 Weber St. N. Unit 12, Waterloo, ON N2L 5C6 > >Ph: 866-883-1172 x5102 > >Fx: 519-883-8533 > > > >Linux Solutions / IBM Hardware > > > > > -------------------------------------------------------------------------- > This electronic message contains information from Primus > Telecommunications Canada Inc. ("PRIMUS") , which may be legally privileged > and confidential. The information is intended to be for the use of the > individual(s) or entity named above. If you are not the intended recipient, > be aware that any disclosure, copying, distribution or use of the contents > of this information is prohibited. If you have received this electronic > message in error, please notify us by telephone or e-mail (to the number or > address above) immediately. Any views, opinions or advice expressed in this > electronic message are not necessarily the views, opinions or advice of > PRIMUS. It is the responsibility of the recipient to ensure that any > attachments are virus free and PRIMUS bears no responsibility for any loss > or damage arising in any way from the use thereof.The term "PRIMUS" includes > its affiliates. > -------------------------------------------------------------------------- > Pour la version en français de ce message, veuillez voir > http://www.primustel.ca/fr/legal/cs.htm > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > > -- * Henry Coleman* [image: Picture]
