Can't make outgoing calls

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What steps will reproduce the problem?
1. Received calls from other softphone (such as X-lite) without any problem
2. Can't make outgoing calls
   - Type number into ComboDial
   - Then I press button call, but nothing happened

What version of the product are you using? On what operating system?
Windows 7 64-bit, VS2010 Express Edition


Note: When I use pjsipDll.dll r107, I can make outgoing calls to X-lite 
SoftPhone, but I can't see any incoming call.

Plz help me!

Original issue reported on code.google.com by nluthy1...@gmail.com on 24 Dec 2012 at 7:25