I am trying to call my Cellphone using the attached PSTN number from the FXO.

This is the command I am trying

originate sofia/gateway/outbound/09xxxxxxxx4 1002

This does not seem to work.

However, if I use a software SIP phone(Zoiper), and use the account 1001 to call the same cellphone number, it works.

So something if definitely wrong in the command I am using, but I can't pinpoint the issue.