On Wed, February 8, 2012 11:06, Ed Heron wrote: > On Tue, 2012-01-31 at 14:01 -0500, James B. Byrne wrote: >> CentOS-6.2 >> >> We have a dedicated CentOS-5.7 host used for fax >> reception >> and transmission that we wish to move to a CentOS-6.2 >> virtual guest instance. The CentOS-6.2 virtual host has >> a >> 4-port serial card installed. > > Consider replacing your multi-serial port card with a > VoIP analog > gateway and use a pre-rolled Asterisk with virtual > faxmodems, like > Elastix. Just make sure your codec is high enough > quality. We used to > receive faxes using a dedicated Linux box with a Comtrol > Rocketport and > an USRobotics MP8. We Converted to SIP trunks and managed > to get our > faxes in the SIP trunks, as well. > > This will remove the PCI pass-through from the equation. > After a brief read this seems to me the approach we should take. Recently I have discovered more about irqs, timing delays, and the difficulties/impossiblities of switching hardware from vm instances than I ever wanted to know. Given that we have three dedicated fax lines and 6 voice is there any hardware that would you suggest for a 4 core x86_64 Intel based host system? We have looked at going completely to v/f-oip but I do not have the time to deal with those intricacies and get this move completed at the same time. So, for the nonce it appears that we would have to employ an FXO gateway to connect our existing POTS lines to the host. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB at Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3