Asterisk

[from AsterFax] SpanDSP error codes ( useful if you are about to organize faxing from asterisk or other voip )

http://asterfax.sourceforge.net/SpanDSP.html SpanDSP provides the core functionallity within Asterisk for sending and recieving faxes. spandsp is a library which provides many of the DSP functions needed for telephony. It is designed to be independent of the telephony platform itself. http://www.soft-switch.org/spandsp_faq/

[from AsterFax] SpanDSP error codes ( useful if you are about to organize faxing from asterisk or other voip )

http://asterfax.sourceforge.net/SpanDSP.html SpanDSP provides the core functionallity within Asterisk for sending and recieving faxes. spandsp is a library which provides many of the DSP functions needed for telephony. It is designed to be independent of the telephony platform itself. http://www.soft-switch.org/spandsp_faq/

VPetkov.net » Spoofing Caller ID on the fly from any phone for legal and legitimate purposes

http://blog.vpetkov.net/2011/07/10/spoofing-caller-id-on-the-fly-from-any-phone-for-legal-and-legitimate-purposes/ Asterisk dial plan exert that allows to enter callerid before making a call

VPetkov.net » Spoofing Caller ID on the fly from any phone for legal and legitimate purposes

http://blog.vpetkov.net/2011/07/10/spoofing-caller-id-on-the-fly-from-any-phone-for-legal-and-legitimate-purposes/ Asterisk dial plan exert that allows to enter callerid before making a call

VPetkov.net » Spoofing Caller ID on the fly from any phone for legal and legitimate purposes

http://blog.vpetkov.net/2011/07/10/spoofing-caller-id-on-the-fly-from-any-phone-for-legal-and-legitimate-purposes/ Asterisk dial plan exert that allows to enter callerid before making a call

Appendix G. KVM Virtual Machine Timing Management

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Virtualization/3.0/html/Administration_Guide/KVM_Clock_Appendix.html Summary: append to VM’s kernel, for i386,i686 => ‘divider=10 clocksource=acpi_pm’, for x86_64 => ‘divider=10 notsc’ This is needed to fix the drifting clock issue on VMs that are not using pv_clock driver

Appendix G. KVM Virtual Machine Timing Management

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Virtualization/3.0/html/Administration_Guide/KVM_Clock_Appendix.html Summary: append to VM’s kernel, for i386,i686 => ‘divider=10 clocksource=acpi_pm’, for x86_64 => ‘divider=10 notsc’ This is needed to fix the drifting clock issue on VMs that are not using pv_clock driver

Appendix G. KVM Virtual Machine Timing Management

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Virtualization/3.0/html/Administration_Guide/KVM_Clock_Appendix.html Summary: append to VM’s kernel, for i386,i686 => ‘divider=10 clocksource=acpi_pm’, for x86_64 => ‘divider=10 notsc’ This is needed to fix the drifting clock issue on VMs that are not using pv_clock driver

How does FreeSWITCH compare to Asterisk? | FreeSWITCH

http://freeswitch.org/node/117 Asterisk vs FreeSWITCH (from lead freeswitch developer’s POV)

Asterisk: The Definitive Guide (covers asterisk 1.8 )

http://ofps.oreilly.com/titles/9780596517342/ online asterisk book, covering a lot of advanced topics