hello,
I need your help for the configuration of an automated attendant and a billing software on a kx-tda200 (150 subscribers and one pri card).
What elements do I need for the auto attendant and the software?
How do you do the configuration on the pabx?
Thanks!

for an AA with that amount of users you would need a kx tvm 200, with at least 4 ports

as for billing software I find the wintarrif very good and is not priced on amount of users

Do you have all the manuals and have you read them thoroughly?