[Asterisk-biz] Porting an 877 tollfree number

[Cyber Processor]

Hello,

I need to port an 877 number I currently have with AT&T small
bussiness in the US.
We need this 877 number to do one of the following:

1) Come in via IAX or SIP.
2) Forward to a local number in Buenos, Argentina.

AT&T small bussiness cannot do either.