A private branch exchange (PBX) is a telephone exchange that serves a particular business or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public.

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16
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6answers
10k views

How do I connect our PBX to a PC?

My boss wants me to find out who is costing us so much on our phone bills. On our phone bill, we can only see the numbers that are dialed, obviously we can't see what extension dialed them. We've ...
14
votes
2answers
961 views

Can anybody explain why to use Asterisk PBX rather than standard PBX from Matrix or Siemens [closed]

Can anybody explain why open-source Asterisk is favourable in comparison with a traditional PBX system from a vendor such as NEC/Syntel/Matrix or Siemens.
10
votes
16answers
6k views

What service do you use for music on hold?

This may not be a sysadmin question for some, but it is definitely a hurdle I have to jump as the sysadmin for my company. We recently rolled-out a company wide VoiP system (Switchvox, to be exact) ...
9
votes
2answers
2k views

Can you please explain the difference between PBX and soft switch in less technical terms?

Asterisk is an open source PBX and FreeSWITCH is an open source soft switch. Source: http://www.freeswitch.org/node/117 Can you please explain the difference between PBX and soft switch in less ...
7
votes
2answers
1k views

In a Asterisk PBX system, is hardware echo cancellation necessary?

I am pricing out hardware for 2 Asterisk (trixbox) systems, they are both smaller (one is a 4 line and the other is a 8 line, both analog TDM800p and TDM400p respectively) installs. And the one thing ...
7
votes
3answers
453 views

What are some potential uses of Asterisk (PBX) for a “power user”

So I read a lot of good things about Asterisk. I am not however looking to run a call center or small business setup. I am still interested what potential uses it has for me as a "power user" and ...
6
votes
4answers
2k views

Is it possible or advisable to virtualize a PBX system? How would one go about this?

I'm totally new to the world of VoIP and we are looking to move from our current provider to a solution we host ourselves, mainly because the current service is so unreliable. Unfortunately I know ...
6
votes
4answers
533 views

VoIP PBX, custom build or appliance?

I'm looking for advices regarding VoIP products. I need to build an in-house VoIP PBX for one of my company's office, and while I'm fairly sure we will go with Asterisk (still leaving the door open to ...
5
votes
1answer
769 views

Elastix(Asterisk) Slow to repsond on incoming PSTN line

I setup a PBX with asterisk and Elastix as a web GUI. I have all incoming calls set to ring to a ring group of our office personnel in a ringall format. The only issue is the time for Asterisk to ...
4
votes
3answers
3k views

Unregister SIP UAC message

I've looked so much on the internet, but I could not find a any SIP Unregister example, and when I search RFC 3261,3665 the word does not even appear, perhaps I'm searching for the wrong phrase. I ...
3
votes
4answers
369 views

Using the Built in Switch in IP phones

I'm working on setting up a small business with IP Phones to connect to the Asterisk Server. Now, for simplicity we just ran 2 CAT5e lines to each room, and 1 was hooked to a phone jack, before my ...
2
votes
3answers
235 views

How to move a Panasonic kx-t7633 Phone

We have Panasonic kx-T7633 phones and I need to move them across office how do I activate or fix the connection after I move the phone Looked at the manual but no answers and googled it as well any ...
2
votes
8answers
2k views

Monitor outgoing calls on Panasonic PBX

As system administrator I need to maintain a PBX (telephone exchange systems) in our company. Now I need to show management statistics of outgoing calls through the PBX so they can control users and ...
2
votes
3answers
1k views

PBX with Fax and Google Voice

Looking to replace/port my home number which I use for mainly faxing for my home business to a PBX server ( Thinking Asterisk or Elastix ). My question is: Does Asterisk/Elastix support Faxing ( ...
2
votes
5answers
3k views

Can Lync server be used as a PBX?

I've seen several brief articles on the Microsoft Lync server (formerly Office Communications Server) that talk about replacing PBX's, but in reading some press releases and websites I'm not finding ...
2
votes
1answer
208 views

Router gets disconnected once I terminate my SIP application

Here is an interesting one, I have a SIP VoIP application which is able to register to the PBX server, and I can invite and see the user call on the callee end receiving an Invite, and on the caller ...
2
votes
5answers
260 views

Considerations for a business looking to transition from PSTN to IP Telephony

Full disclosure - This is related to a homework assignment question. I am not asking you to do my work for me, I am merely looking for some pointers and considerations to direct me in my further ...
2
votes
5answers
169 views

Phone system for 55 size firm [closed]

We are in the process of upgrading our 11 years old PBX system and looking for options like Panasonic, Avaya, Toshiba etc. We welcome any suggestions/features/product models to look for 55+ size ...
2
votes
1answer
454 views

Elastix and two ISDN lines

Since I am not an expert on communications, I will describe everything from the user perspective. We had a PBX with elastix embedded and two ISDN cards in it (we have two isdn lines). The mobo of the ...
2
votes
0answers
31 views

Asterisk PBX Manager not saving changes

We are implementing Asterisk 11.4 and using the native PostgreSQL database to store call data. So far, we have not been able to change the admin password through the PBX manager. The password gets ...
2
votes
1answer
266 views

What's the correct way to step a Draytek 3510 IP PBX to avoid line echo?

I've setup a Draytek 3510 IP PBX with 10 VigorPhone 350 handsets. It's all connected through an unmanaged 48port gigabit switch - all structured cabling except patch leads are Cat6. Dhcp is handed out ...
1
vote
2answers
161 views

Advantages and disadvantages to using a VPS (or any remote server) to host a VOIP/PBX system

My company currently runs a Trixbox Pro server locally. We're getting sick of the licensing fees and terrible community support and are considering migrating to something like FreePBX. I see that ...
1
vote
5answers
805 views

Is there a stable cross-platform softphone? Or a Linux-only one?

We use an Asterisk based solution as our PBX, and although we've found hardphones work flawlessly, we have yet to find a reliable softphone. The basic requirement is that it allows multiple calls and ...
1
vote
1answer
168 views

Provisioning SIP Phones over the internet

I have a few SIP Phones that are located of site and connect to my PBX over the internet to make calls. For some reason one of these phones has become unprovisioned. In my office phones get ...
1
vote
2answers
1k views

It is possible to set up an Asterisk PBX running on EC2 and have reliable call quality?

There is an EC2 kernel with a 1000Hz clock, which I have successfully used to set up Asterisk etc already, but I am wondering if other issues (e.g. transit from London to Dublin to London- our current ...
1
vote
1answer
253 views

Asterisk server for unlimited cell phone calling?

Does anyone know if Asterisk server can do the following? I have 10 freelance programmers each working from a different city, each with their own cell phone. I want to have one business phone number ...
1
vote
1answer
197 views

What is SIP trunking?

Can someone explain to me in plain English what SIP trunking is, please? I've read about it on Google, but I don't really grasp it yet. Does it allow a VoIP call to be placed outside of the LAN? So ...
1
vote
1answer
239 views

What is the best option for SIP service redundancy?

From your practical experience, what is the best option for SIP service redundancy? a) one SRV record pointing to a hostname which has two A records b) two SRV records pointing to two different ...
1
vote
1answer
76 views

Best method to protect software PBX system from disaster

I have been put in charge of maintaining an old PBX system which is running Windows Server 2003 and TeleAdvantage PBX software. The big concern is that the company that originally built this PBX box ...
1
vote
2answers
107 views

Software/Hardware used to build Virtual PBX Like Systems

I work for a large web site design and hosting firm. We are planning to introduce a suite of SEO services. I have been given an interesting task as part of the development effort. The goal is to ...
1
vote
2answers
36 views

How to secure a Windows app running on a shared desktop?

On our network, there are a few desktop computers that run software that monitors calls placed using our PBX. The software needs to run in a user context, so there is a domain account created for each ...
1
vote
1answer
184 views

Asterisk PBX on linux (CENTOS 6.2) hangs up calls that are being recorded after 33 seconds

i have an issue with my calls being made via ASTERISK PBX running on linux CENTOS 6.2. The use case is that a call is triggered from /var/spool/asterisk/outbound/ The caller is dialed The dialplan ...
1
vote
1answer
894 views

GUI for Asterisk 1.8.8 on Debian 6

Can someone point me towards a tutorial for installing either FreePBX, or a Webmin GUI for Asterisk 1.8.8 on Debian 6? Asterisk Thirdlane Multi Tenant PBX Manager and Asterisk Thirdlane PBX Manager ...
1
vote
2answers
185 views

Routing in OpenSIPS

How to modify under OpenSIPS1.6.4 the default routing to switch the From: field in every instance of incoming SIP packets to a predefined string? According to the documentation the $fd pseudovariable ...
1
vote
2answers
325 views

Voice patch panel wired to outer pair

Our Intertel phone system uses an unusual wiring scheme at the phone by using the outer pair (pins 2 and 5) of wires on a phone jack. I am looking for anyone that knows of a vendor that sells 24 port ...
1
vote
2answers
166 views

Asterisk IVR setup: disallow direct dial for some extensions?

We've got PBX to configure. It's based on Elastix 2.4.0, freePBX 2.8.1 and Asterisk 1.8.20.0. Currently we have a setup for inbound calls like that: Inbound call > Announcement (30 sec) > IVR ...
1
vote
0answers
121 views

DTMF Detection in Asterisk PBX

I have an asterisk server as IP PBX. I have created an Auto-Attendant for my company and asking users to enter desired extensions when they call. The problem is that when the message is playing and ...
1
vote
0answers
163 views

Basic specs for 1990 model year Detewe Varix 2000 PBX? [closed]

I'm wondering if someone could find among their old manuals some basic specifications for Detewe Varix 2000 exchange - like power usage, number of supported phones, ports, lines, trunks, basic ...
1
vote
1answer
260 views

Microsoft Lync and Avaya PBX system

I am a complete beginner concercing Microsoft Lync and PBX systems, so please bear with me. I have set up a Lync standard server which is running fine. We can chat/audio & video conference on our ...
1
vote
3answers
139 views

centrally administered voip solution for multi-office company

I've been playing with VoIP IP PBX solutions for a few months, but I'm trying to find a solution that will allow for the following: An IP PBX based in a data centre (where SIP trunks will ...
1
vote
1answer
507 views

Asterisk call failure timeout

I am using Asterisk and there seems to be a problem with the delay that the server answers a call. What actually happens is that the caller hears a busy tone and then hangs up, but a channel is opened ...
1
vote
1answer
336 views

Where can I get some real life CDR/SMDR/AMA logs from asterisk or ther IP based switch?

In order to develop some generic call accounting software I need some sample logs from IP based PBX. Where can I get some? - I need more than 100 records, preferably using both SIP and telephony ...
0
votes
1answer
385 views

Virtual PBX for automated attendant and SIP clients [closed]

I have a task to make our own virtual PBX for automated attendant and SIP clients. Scenario is following: We have our SIP account given from our voice carrier now I want to share these lines with ...
0
votes
1answer
185 views

DDoS attacks to PBX [closed]

I'm wondering if DDOS attacks to PBX or telecommunications systems is possibe real. According to this links: ...
0
votes
2answers
71 views

Voice broadcasting options [closed]

I am investigating options for doing recorded telephone message calls to batches of users (about 400 max) for a client. Ideally a vendor or technology with little or no startup cost, and a ...
0
votes
2answers
63 views

Blocking geographic cities from accessing Asterisk using Secast

I am using Secast for intrusion protection on my Asterisk PBX. It’s working great, and I now want to start blocking specific geographic regions. My system is getting hammered from Ramallah ...
0
votes
1answer
349 views

Click to call with a soft phone

I'm trying to set up click to call with a soft phone. I'm using QuteCom for the soft phone, vTiger for the CRM and Asterisk, through Elastix for the PBX. I was wondering if someone could point me in ...
0
votes
1answer
164 views

VoIP PBX dilemma

Our phones are currently provided through a local hosted VoIP company and it isn't working all that great. As a result, we have decided to move to a local PBX server and bring a few PSTN lines to our ...
0
votes
1answer
128 views

Asterisk, How can i play an audio file [closed]

Here is the dial plan [testInComingCalls] exten => s,1,Answer exten => 30953025,1,Dial(SIP/20000,20) I would like to play an audio file as soon as somebody answered the call (Welcome Message)..
0
votes
1answer
45 views

Advice respect an architecture PBX [closed]

i'm new on the world of PBX and network infrastructure. I worked in a model and wanted to know how feasible it is to implement it in a production environment. The requirement is to create a solution ...