VoIP Abuse Project

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By popular request, we've convinced someone from the VoIP Abuse Project to join us tomorrow at noon on VUC. I think many of you will be interested in this topic, so please come by, join in and ask questions. http://vuc.me for all connection info and links to VoIP Abuse Project A couple of other features and announcements are scheduled after that segment, including an Astricon update and maybe even something about a mysterious book I have heard about. Call in from 11:40 AM SIP:200901@login.zipdx.com - prefer g722 and accept g711 - Skype:vuc.me - Call widget on the site during conference hours. See you there! /r

Asterisk Users 4.9 years ago 0 Answers

How To Pick A Codec On The Fly In Asterisk

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I'm trying to test an IVR system with recorded prompts and would like to be able to call 1234 and have the codec be gsm, 2234 slin, 3234 ulaw, etc. I know I can set up 3 users where #1 is gsm,  #2 is ulaw and #3 is slin; Need it the other way so I can do DAHDI--> IAX testing. Daniel Tryba (daniel at tryba dot nl) came in with this interesting solution:

exten => 1234,1,Set(SIP_CODEC=alaw)
exten => 1234,n,Goto(0234,1)
exten => 2234,1,Set(SIP_CODEC=slin)
exten => 2234,n,Goto(0234,1)
Should do the trick.

Asterisk Tips 4.9 years ago 0 Answers

Asterisk Cluster Scenario

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My company has experience in setting up single asterisk setup, but recently one of our customers asked us to set up an asterisk cluster, that must be High Availability and Load Balanced. So I wrote here to have some hint or advice about the configuration we thought.

First of all I'll explain you the Asterisk Cluster scenario:

The asterisk cluster must serve as Call Center "Hub-and-Spoke". There are lots of little call-centers (~15 ops), phisically separated, that must appears as a single "Big Virtual Call-Center". The call-center is inbound and outbound. Initially the "Virtual Call-Center" will be composed of 15 small call-centers (= ~230 ops), but the…

Asterisk Users 4.9 years ago 0 Answers

Asterisk And Digium TC400B

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Because of the heavy load and the high expectations of an asterisk server offered as a solution integrated with our CRM software, we were looking into other possibilities than software Licenses for G729 and G723 codecs. To lower the pressure on the processor giving it more space to do more work. We heard of a hardware (PCI CARDS) can be used with Asterisk that does the work. And we stumbled with Digium TC400B. Could be a newbie's question.. but does that serve our needs? As we have not pressured a server before up to 1400 extensions with 600 outbound SIP calls (customer's needs). The server in question…

Asterisk Tips 4.9 years ago 4 Answers

Asterisk As A Distributed Paging System

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I'm building a paging system composed of roughly 10 switches in daisy chain, with an embedded box with a speaker and a microphone for each switch. The embedded box runs my software. I need the system to be resilient to any network partition, so that anyone can send announces from any mic to all the reachable clients. I'd need also to page a subset of all the speakers. I'm currently using some software I wrote which sends voice over multicast RTP and coordinates all the sites with multicast messages. I don't own the switches so each site will be assigned an address by DHCP, that's why…

Asterisk Tips 4.9 years ago 5 Answers

Asterisk T38

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In the simplest terms I can think of, I'm going to describe what I want to do and I want to know if it's possible in the current asterisk version. Can I take a T38 call from an ATA, convert that back to analog and have asterisk screech that out on a POTS line to a remote fax machine. Would it work? And could I receive an incoming fax the same way? Please don't talk to me about alternatives to faxing. I can't take the fax machine away from the end user, they don't want to hear about it. I either need to make it…

Asterisk Tips 4.9 years ago 4 Answers