I am trying to access Sipbroker peers from my Orbtalk account using the **473
prefix as detailed in Orbtalks User Guide. All times a sweet lady tells me the
number is not recognised (for example the Sipbroker test number
**473*011188888).
Similar calls via Voipfone on the same Grandstream work perfectly.
I would appreciate any help and settings from Orbtalk users who have theirs
working. Thanks. Robin
Orbtalk sipbroker access Grandstrean 2000 
Linear Mode
