Problem in Auto Fax

Hi Champs

I am facing an issue with autofaxing our POs..

its going well for the vendors in US but getting failed for all the vendors in Singapore..

I checked the vendor master in both cases fax number is defined correctly.

In PO output long it showing Green light as processed but in SOST it showing falied with reason shown below

PS: I have manitaine donly fax number in vendor master but its adding 011 automatically..dont know why ..

No delivery to FAX (0116563370970)

Message no. XS812

Diagnosis

The message could not be delivered to recipient FAX (0116563370970). The

node gave the following reason (in the language of the node):

No fax machine detected

System Response

Processing was ended normally.

Additional information of the node used (in the system language of the

node):

No fax machine detected

COuld someone help me in resolving this..

Thanks in advance

BR