End users should authenticate themself by password (which is stored as plain-text or MD5-encrypted password in system) before they are able to call. End users are gathered into groups. Each group has its own routing settings and pricelist.

End user's call origination can be prohibited by 2-stage balance checking strategy. First, end user's balance is checked. Second, company's (to which the end user group belongs) balance is checked. End user balances and CDR are maintained for each user individually and can be viewed in real-time mode.