static or dynamic IP address- which is best?

Is there any difference between using a static or dynamic IP address with trixbox? I hope to integrate my SOHO phones and other apps, including VoIP (sIP and skype, if I can) so that I can answer the office phone even when I'm travelling

I am new to this, and am still in the process of assembling the bits so I can start playing with it, I coincidentally need to change my ISP and have the option of choosing a static or dynamic IP address. Which should I go for?

Thanks in advance for your help

Hi and welcome to Voipuser.

A static IP makes everything a lot easier to get and keep working. Because the address remains constant you can simply leave Trixbox to get on with it. If you have a major installation this is the only way to go.
But you do need to be more careful over how you secure the server. Make sure there is nothing open to the Internet that is not absolutely essential to operation etc.

With a dynamic address every time your address changes the server needs to re-register with the service provider, or it won't work. It is not the end of the world, there are any number of scripts available that check your current address and force registration, or there is dyndns.org which will match a domain name to your continuously changing address, either method is adequate for SOHO use.

Forwarding to an alternative number is often something a service provider will offer, so if you are only looking at three or four phones, you may be better served by going direct?
Bouncing a call in and out of an Asterisk server over ADSL and PSTN lines can leave something to be desired in call quality.

Thanks for the clear, and rapid, reply.