SetAccount has been deprecated in favor of the Set(CDR(accountcode)=account).

Oliver, as the NOTE at the top of the page says, this function doesn't exist anymore in 1.4+. Please use Set(CDR(accountcode)=account)

Trying to test SetAccount with Asterisk 1.4.1, and simply adding the following line before the Dial:
exten => _1NXXNXXXXXX,n,SetAccount(1122)

When dialing out, I get a "Call failed: denied" on the SIP client,
and the following on the asterisk console:
WARNING32574: pbx.c:1779 pbx_extension_helper: No application 'SetAccount' for extension (siplogin, 18002553700, 4)

Do the accounts need to be pre-declared somewhere, or has the SetAccount syntax changed with v1.4.1 ?

Thanks!

Here is an example of how to ask for a billing or AccountCode after someone has dialed a number.

I use this for a Bank that needs to back charge for LongDistance calls. The Code is not authenticated, but can be easily. If there is no code, then the default 999 is entered.

macro-account_calls

exten => s,1,DigitTimeout(6)
exten => s,2,ResponseTimeout(10)
exten => s,3,Wait(4)
exten => s,4,Read(accountcode,billing-3digit,3)
exten => s,5,GotoIf($"${accountcode}" = ""?macro-account_calls,s,10) ;Jump to set account at 999 if nothing entered
exten => s,6,SetAccount(${accountcode})
exten => s,7,Goto(s,12) ;if accountcode is not empty jump to end.
exten => s,10,SetAccount(999)
exten => s,12,NoOp(AccountCode=${accountcode} DialOut=${ARG1})
exten => s,13,Wait(2)
exten => s,13,Playback(pls-wait-connect-call)
exten => s,14,Macro(dialout,${ARG1})

See also: Authenticate with the a option

Example: Authenticate(1234|a)