Comunications ATA 186 to ATA 186 (without any gatekeeper or CallManager)

I have two customer. Both connected to Internet (ADSL)

Each customer has an IP fixes and an equipment with ATA 186.

the configuration would be:

Customer 1: extension 1000
Customer 2: extension 2000

When client 1 dialing 2000, they call to VoIP phone of customer 2....
and vice versa.

This simple configuration can be made without having to use a
Gatekeeper (Asterisk, CallManager,...)

The solution seems to be in that ATA of customer 1 puts as gateway ATA
of customer 2, and vice versa.

I was not able to find answers in the Cisco documentation.

would know somebody like doing it? would you have any url/link that
explained it?


I really need help. Thanks.

 

Of the ATA186 has a dialplan the answer would be found there. The dialplan
would tell the ATA to call the ip of the other phone.