Common Asterisk PBX Topics

Common questions regarding Asterisk PBX and IPComms SIP Trunks.

Does IPComms services support IAX, Asterisk, IAX2?

In most cases, yes.  But it depends on the service in question.  Speak to a member of our support staff for specific product details.

TAGS: Asterisk, IAX
Can I use Asterisk or trixbox with your service?

Yes.  We support all of the most popular flavors of Asterisk Open Source PBXs

TAGS: Trixbox
How do I configure my asterisk pbx to work with your service with codec G.711?

We have online examples to assist.  View our sample device configurations page.

TAGS: Codec, G.711, G.729
How do I configure my Asterisk PBX to work with your service if I have a private IP Address?

 

What do I do if my asterisk server has a private IP Address?

Please enter the following two settings (externip and localnet) at the top of your sip.conf file in the general section.  

If public, nothing needs to be added to the general section.  Depending on your setup, you might need to forward all ports 

to your Asterisk server's private IP address or put the private IP address of the Asterisk server on the DMZ.

 

externip=WAN IP address

localnet=192.168.1.0/255.255.255.0 (or whatever your private LAN is configured for)

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Do you provide a SIP username and password for registration or do I have to have a static IP address?

Yes, we do provide a SIP username and password registration option during the online ordering process.

I am new to asterisk. Can you help me with my setup and configuration?

Everyone needs a little help some time.  Why should you have to pay for it?

When you sign up for any of our services or packages, you will receive free asterisk support.  We will assist you in basic asterisk setup and configuration with our service to get your service up and running quickly.

IP Comms has designed products and services that are designed to meet the needs of your asterisk PBX.  Our network can support SIP and IAX trunk connectivity.  We have online support documents and configuration examples available to guide you through your asterisk setup and configuration.

TAGS: SIP
What Server Should I Use for my Asterisk PBX - How to Size your Asterisk Server

Use the chart below to select a base system size. The chart is based on concurrent calls, which is the most important metric in sizing an Asterisk PBX system. Concurrent calls means: “How many people will be on the phone at the same time?”

For instance:

  • If you have a T1 with 23 channels of voice and 1 channel of data, then your max concurrent calls is 23 channels.
  • If you have a 5-line SIP trunk from your ITSP or SIP service provider, then the max number of calls you’ll be able to place concurrently is 5, so that’s 5 channels.
  • If you have 8 copper phone lines from the telephone company, the max number of calls you can max is 8, so that’s 8 channels. 

Find your concurrent calls in the first column, and view your recommended system requirements.

Concurrent Calls Processor RAM Hard Drives*
< 5 500 Mhz 256 MB 40 GB
5-10 1 Ghz 512 MB 80 GB
11-24 2Ghz (Single or Dual Core) 1 GB 500GB  – 1TB
25-50 Quad Core Xeon 2 GB 40 GB + NAS
51-100 2 x Quad Core Xeon 4 GB 40 GB + NAS
101-200 4 x Quad Core Xeon 8 GB 40 GB + NAS

 

- Source: Total Ticket Systems

How many users does Asterisk support?

Lots, but it is not a service provider, its more geared towards office use, and there are many factors affecting usable size.

How do i fix one-way audio on my Asterisk PBX?

The following is used to fix one way audio on your Asterisk PBX if you do not have a public static IP address on your asterisk pbx, and you are using IP authentication (not SIP username/password Registration).

You will need to enter the following two settings (externip and localnet) at the top of your sip.conf file in the general section. 

externip=WAN IP address

localnet=192.168.1.0/255.255.255.0 (or whatever your private LAN is configured for)

Depending on your setup, you might need to forward all ports to your Asterisk server's private IP address or put the private IP address of the Asterisk server on the DMZ. 

Note: If you have a public static IP address assigned to the server itself, then you do not need to add these settings to your config.