Helloguys - welcome to the forum.
If you dial 01186XXXXXXXXXX, then you are making an international call to China, so I'm not sure what you gain by further processing it through the OBi110. Anyhow, if the OBi110 only has POTS, then it cannot be used for an incoming call into it and an outgoing call to the local China number at the same time.
Here's the good news: If you own two OBi devices anywhere in the world, the link between them is free using the OBiTALK network. For example, in your case if you call China from your OBi202 in US, then you only pay for the local call in China.
There are three scenarios described here of how it works (substitute China for Holland):
http://www.obitalk.com/forum/index.php?topic=6947.msg43848#msg43848It's quite a lot to take in. If you only have a few numbers you dial in each direction, then scenario 2 is probably best. Let us know if this what you are looking for and some more info of how you might use it and we can provide specific details for your setup.