1.) no aaa server in your network
then use
-dialer pools - if you have different locations and they use different transfer networks
(IP configuration on the WAN)
-dialer rotary groups- if all locations share the same transfer network
( IP configuration on the WAN)
aaa server in the network ?
then use
- dialer rotary group with "dialer aaa" configured (search for "large scale dialout"- feature at cco)
Best regards,
Kalli