asterisk users - Oct 2003 - Calling a registered computer

I have two Asterisk servers: 
Box 1: Static IP address
Box 2: Dynamic IP address

I have Box 2 registered to Box 1 along with a switch
statement.
I can make calls from Box 2 to Box 1, but I am
wondering how can I make calls from Box 1 to Box 2?
Do I need to register Box 1 to Box 2, or is there a
simpler way?

I have searched the archives, but most messages deal
with the registration process, rather than what to do
after successful registration.

Thank you for your time.

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Hi!
> I have two Asterisk servers: 
> Box 1: Static IP address
> Box 2: Dynamic IP address
> 
> Do I need to register Box 1 to Box 2, or is there a
> simpler way?
Same questions for me: 

- how can u rmake sure to egister with the dynamic IP server AFTER it has 
registered with the static IP server?
- how do I reference the dynamic IP in iax.conf to compose the register 
statement?
> I have searched the archives, but most messages deal
> with the registration process, rather than what to do
> after successful registration.
This might be of help (although I have to admit that I still have 
problems understanding the left-right example on that page):

http://www.voip-info.org/wiki-Asterisk+-+dual+servers

Greetings, Philipp