this is a quick install,
first I thought maybe trixbox 2.x cannot interwork with a2b 1.3 very well,so I first install pure a2b 1.3,it's good
so what I do next
1. run one sql command to add some tables,fields to existing a2b database
2. download and copy callshop web pages to /var/www/html , so callshop owner is http:///callshop
3.download a2billingcs.php, Class.A2Billingcs.php,Class.RateEnginecs.php,etc
to /var/lib/asterisk/agi-bin and /var/lib/asterisk/agi-bin/v13libs_a2billing
I use different filename so it wont did some side effects to your normal a2billing operations
but for this customer,I met one problem,finally fixed it
because this customer's termination need authentication with callerid,so I must config cid group to send specific callerid using these trunks
BUT this not compatible with my callshop solution