[Serusers] ser masquard ?

[Рудаков Евгений Валерьевич]

hi,

i have some accounts to sip provider, but i dont know
how to setup ser 8.12 to masquarde local accounts and domain
to external account with domain. 

like this 
oper:test at local.net -> 12331223:123 at deltafour.com 
test:test at local.net -> 12331223:123 at deltafour.com
vase:test at local.net ->  454331223:123 at deltafour.com

it is possible ?
thnks