AASTRA 4425 IP Vision for MD Evolution User Guide - Manual (Page 152)

More Features of Your Extension
MD Evolution – Dialog 4425 IP Vision 152
Note: The implementation of this specific service assumes
that your facility uses the Least Cost Routing (LCR) method
for external calls. It also assumes that, at the very least,
these outgoing calls are subjected to call detailed records
that are managed within an external charging server.
Contact your system administrator for more information.
He/she will also provide you with the accepted account
code format.