“Established Channels” for Moving Money out of Syria into Lebanon

Financial Times:

Samir Seifan, a Dubai-based Syrian economist, estimated Syria’s middle and upper classes had moved between three and five billion dollars out of the country since unrest broke out in March, alarmed by pressures on the currency and the dearth of investment opportunities.
“The easiest way to smuggle money out of Syria is into Lebanon,” said Mr Seifan. “There are established channels.”

I wonder what he means by “established channels”, and why there are no similar channels with, say, Turkey.

There were earlier reports that $20 billion were smuggled from Syria to Lebanon, but those were categorically denied by the Lebanese banking establishment.