Category: VOIP
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Asterisk Selective Outbound Routing
I had a customer of mine that a single user inside their office needed an 800 number routed to them…not a big deal. What we did was to order an additional DID from their SIP provider Vitelity. The number was provisioned and I forwarded it from the incoming trunk to the users phone. I made…
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VoIP And Codecs
I received a question via email that was roughly as follows: “I currently use Vonage VOIP to provide voice and fax lines to remote construction sites via VSAT satellites. The problem is that each port requires a lot of bandwidth (90 kbps). Is there a solution that would require much less bandwidth (@20 kbps) per…
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Configuring NTP Client On Callmanager 4.X
CM 4.X doesn’t use the standard windows 2000 NTP client W32Time, it uses XNTP. To configure it, you edit a config file and restart the NTP service on the server. C:\WINNT\system32\drivers\etc\ntp.conf server 207.171.7.152 # Set Local Clock to Authoritive Time Source server 149.20.68.17 # Set Local Clock to Authoritive Time Source fudge 127.127.1.1 stratum 5…
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Trixbox Cheat Sheet
I found this great cheat sheet a while back. It has tips on trixbox specifically and asterisk in general.
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Flash A Cisco 7960 To SIP
I have to say it was a painful process…it took me about an hour of tweaking…mostly my own fault…hehe. Most of you guys have seen a Cisco phone at some point. If you’ve ever watched a show on Fox, you most likely have seen one…hehe They make great phones, and not just for CallManager. You…
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Inbound Calls Forwarded to External Numbers Won’t Pass CallerID(or Fail to Dial Out)
This Cisco article describes the problem exactly! The scenario: I set my desk phone’s call forward all to forward to my cell phone. Someone from the outside calls my desk and it forwards to my cell. The number ringing on my cell phone looks like the generic PRI, and not the caller or my desk…
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Callmanager 4.X CDR Processing Problem
If you are having CDR issues you should check this Cisco CDR Troubleshooting guide. CDR generally: Saves to text files Then writes text files to the CDR database Last it writes the CDR database to the Art database We have a custom set of files that crunches the info from the Art DB table to…