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Total Amount Of Asterisk Installations

Counting any Open Source package is difficult for many reasons. There is probably not a reliable answer to this question since there are at least 4 major “flavors” of Asterisk out there (1.4, 1.6, 1.8, 1.10) and open and commercial source. It is reliably > 10,000 and quite possibly over 100,000 or even over 1 million. The Asterisk folks might be willing to tell you how many downloads have been done from http://www.asterisk.org , but that wouldn’t tell you the real number.

Maybe a good start point for an estimate would start at 200,000+ if you are including all of the versions and types. But then we might still think about the Asterisk boxes that are plugged to the Internet.

Getting a reasonably accurate count maybe would not be that difficult, but everybody is so paranoid about anybody knowing anything about them and what they do.

Some community members, like Danny Nicholas, points out the idea of a ‘curl’ request in the script that starts Asterisk that sends your MAC address and Asterisk version number to Asterisk.org. Personally I think that’s a great idea, as there’s no IP address tracking involved or any other identifying information, just the MAC and cheese. Another important remark is that, being Open Source, you can see exactly what is being sent and could always ‘opt-out.’

Some really useful information could be gathered and displayed like:

  • ‘Popularity’ of different versions.
  • Average time between restarts by version number.
  • Ratio of starts to stops by version number. (The difference between starts and stops could be an indicator crashes.)

Other information that might be helpful to share would be the TDM capacity or maximum simultaneous call count. And all that without really getting ‘compromised’ regarding the shared information. After all, what ‘competitive advantage’ would someone have over you just knowing that Asterisk was started on a box owned by someone, somewhere?

Tell external number instead of internal number


I have an internal extension, e.g. 1005 which is being called from an
external/public number like 123456789. Now when it comes to the spoken
voicemail information it says something like “number 1000 not available”,
however it should say “number 123456789 not available”. How can I configure
this? I already googled and I guess this is really easy, but I just
couldn’t figure out how to do this ): So thanks for any hint :-)

911 multple-alert question

Can you set up asterisk so when a 911 call is placed, in addition to the
call out to the PSAP, it also alerts multiple other phones on the switch
and will display detailed information. Such as alerting a receptionist
or security guard there is a 911 call elsewhere in the building and the
location of that call within the building? If so, how?

Thanks in advance for the help…

Administering phones

I’m new to asterisk, currently working through Asterisk, The Definitive Guide. I have a couple Grandstream 200 phones and a Polycom 501 to play with. The Grandstreams were very easy to configure, but the more capable Polycom almost drove me crazy. There is so much conflicting information on the web about necessary config files and names of those files. Anyway, all my phones are now working on a basic level, but it occurs to me that once spend a lot of time learning Asterisk, I might then have to spend an equal amount of time figuring out how to configure the phones. The polycom phone, for example, has very large configuration files with a myriad of options. The manual for this phone alone is over 300 pages.

So my questions are, what phones do you recommend, are there recommended sources for training on said phones, or in general, what advice do you have for configuring phones the phones themselves?

And a related question, we currently use 3Com NBX system where everything is configured via a gui, phones and all. I don’t yet know if I will want to run asterisk with a GUI, but if I do, are there any options for configuring phones through a GUI?

Thanks much

Richard Hiers
Director of IT Services
Covenant Theological Seminary

special digits * # on sip dial string

hi guys.
sorry if this is a silly question.

My recharge application uses * digits if the subscriber wants to send
some aditional information to speed up a process, dialing something
like *777*123*5000
On my old ss7 network works great, but on my new ngn/sip i think it’s
not possible because somewhere the call is rejected.
-On the NGN/Ericsson side engineer say that the call whas deliverd.
-On the asterisk side there is no invite shown on debug.

Can sip one or more * signs in a dial?
What am i doing wrong.

thanks in advance..

Capacity of single instance of Asterisk


Can someome give tested and proven information on Asterisk capabilities?

I have a server with 24 cores running at 2.4ghz and 16 GB RAM. How many concurrent SIP sessions I can run from single instance of Asterisk on this server? I wish to use G711 codec with echo cancel. And all calls needs to be recorded.

What will be impact on no of session when G729a is used?

Thanks & Regards,
Amit Patkar