[Asterisk-Users] Asterisk / SER or both

[usedcanon]

Hi,

I am looking to implement a system to use as a prepaid service. I am aware
that asterisk could do this with app_prepaid. However I am not sure if this
is the best solution.

Does anyone know if SER has a simmillar solution. Would I be right in
assuming that SER as a SIP server is more scalable and can handle with more
registerations/users ?

Alternatively would it be a good idea to use SER as the SIP server and use
asterisks as the PSTN gateway amd to manage the prepaid billing (given that
only off net calls will be considered chargeable)

Your commments and feedback will be greatly appreciated.

Umar Sear