How To Make Voip Client Cannot Use Same Username?


Hi All,

I have one asterisks server and 3 client (i'm using voip sip client for my handphone). I've configured sip.conf and extension.conf with 3 user different. And nothing wrong with them, i could make them to make a call too.

what i want to ask is, i was try to use 1 user (ex:1001) in 2 different client. example: client 1 (1001) make a call to client 2 (1002) --> ok then in client 3, i used (1001) same username with client 1. when client 1 is connecting with client 2, my client 3 could make a call to with client…

Asterisk Users 11 months ago 3 Answers

Asterisk VoIP Software 12.0.0-beta2 Now Available!


The Asterisk Development Team is pleased to announce the second beta release of Asterisk 12.0.0. You can immediately download this release at We strongly encourage all interested Asterisk users to participate throughout the testing process. For any issues you might find, please use the issue tracker to report it: We would like you to come to the #asterisk-bugs channel in order to help communicating issues you found. Also, it is also very useful to see successful test reports. You can use the asterisk-dev mailing list for that ( The next major release in the series of our favorite VoIP software will be Asterisk 12,…

Asterisk Announces 1.8 years ago 0 Answers

Moving Calls From One E1 To Another


Hello everyone. I want to migrate an old PBX which uses the Е1-PRI from one Telecom to VOIP by transparently moving the numbers one by one. I mean that the numbers that the PBX handle must be transparently moved from one operator to another. The old connection to the PBX is Е1-PRI and we must preserve that because no one knows how to configure this PBX. So my idea is to connect a PC with 2 ports E1 module between the PBX and the old telecom. One port of the module will be connected to the telecom's wire and the…

Asterisk Users 2.2 years ago 1 Answer

Asterisk Sizing For Play And Dtmf Detection


Dear all

i'm planning a migration to asterisk for a high volume IVR service (from 1000 to 1500 concurrent call)

The IVR service is based only on DTMF tones so the features required is

- play feature - dtmf detection

Asterisk will receive calls via VOIP (SIP with g711 codec)

The IVR service wil be a static service based on Asterisk dialplan with some prompt (from 0 to 5, play of files in the same codec of the received call) and some dtmf detections.

How many simultaneous call can i handle per server? each server will have:

4 core 3.0 Ghz 4 GB of RAM

I need an…

Asterisk Users 2.5 years ago 3 Answers

Playing Music Through VoIP Handsets While On Hook


This is something I've seen with some key systems and PBXs. When the phones are on-hook, they can play music throughout the office instead of having an overhead speaker system do it. Never heard of it being done with VoIP, but figured I'd ask if anyone else has. I don't see any way to do this on any phones I've looked at.

Asterisk Users 2.7 years ago 5 Answers

Need Help Designing Implementation



I'd like to replace my current VOIP provider with an Asterisk based solution. I have some ideas I want to run by the list to see if they are possible, and get answers to a couple questions.

I want to setup two Asterisk servers that are linked to each other: - The first server would be my "external" (public) server and would live in a real data center. The second server would be my "internal" (private) server and would live in my house. - The external server would receive all incoming calls and handle the voice mail stuff. - The internal…

Asterisk Users 2.8 years ago 2 Answers

Fax Configuration


What is the best way for me to setup Fax Capability with VOIP only.

I have a Asterisk Server hosted on the internet without a modem. I'm using Flowroute, which is working awesome, for VOIP calls.

I only have a SIP Phone at home and two Printer/Scanner/Fax Printers.

I'm not sure which Fax Addons or Extensions I should use for Asterisk. I'd like it to Self Detect on any line.

I also am not sure what or how I can connect a Network Only Printer/Scanner/Fax Machine at home to it. It has a Telephone Jack but I'm only using VOIP.

I'm pretty advanced with Asterisk…

Asterisk Users 2.9 years ago 5 Answers

Fax For Asterisk Success Rates?


I'm running Asterisk and am connected to the nexVortex trunking service over a DSL line solely dedicated to VOIP usage. For both incoming and outgoing faxes, I'm getting a failure rate of just over 25%, and over a handful of reasons.

Is it natural to have this many problems on a completely digital configuration? I'm trying to cut our analog phone line (because it's so expensive), but some fax machines just don't seem to ever accept a fax. Many of the failures are on the same numbers, forcing me to fall back to an old analog fax machine just…

Asterisk Users 2.9 years ago 13 Answers

Which Card To Get?


We are investigating the possibility of using Asterisk in a KVM based virtual machine to handle connections to and from our HylaFax service. Our current set up uses a dedicated host with external fax modems. What I wish to know is what interface card would the list members recommend for a proof of concept trial?

We currently have two incoming fax lines and five vox lines all POTS. Our physical internet connection is fiber but I could not tell you exactly what type of service it presently carries. It is upgradable to a considerable extent in any case.

We are planning to…

Asterisk Users 3.1 years ago 3 Answers

Recommended VOIP Monitoring Tools


As system administrator, monitoring the continuity of services is vital. Today I would like to highlight some tools that could come in handy for VoIP monitoring.


For those of you who didn't know it, Nagios can be configured to monitor pretty much anything you want, including Asterisk servers. Actually, with Nagios the (much) harder part is deciding what’s relevant to monitor, and what your alarm thresholds should be set at. Some VoIP community members have reported that they used Nagios to monitor ~4,000 hosts and about 8,000 to 10,000 services before they started running into scaling problems on a single box. For…

Asterisk Tips 3.2 years ago 2 Answers