[Asterisk-Dev] Dial vs. pbx_exec('Dial')

[Chris A. Icide]

On 11:19 AM 10/14/2004, Matthew Boehm wrote:
 >Is there going to be "that" much of a difference, resource wise, in doing
 >the following:
 >
 >exten => 400,1,SomeApp(400)
 >exten => 400,2,Dial(${RESULTOF_SOMEAPP})
 >
 >vs.
 >
 >exten => 400,1,SomeAppA(400)   (SomeAppA calls pbx_exec('Dial') internally)
 >
 >I've been researching into TrollPhone.org's rate_engine and I noticed that
 >it didn't handle the calls itself;
 >instead it created a chan var with the new number to be dialed, and you were
 >suposed to pass that along to Dial().
 >
 >I wanted to change the code of the rate engine to do the dialing itself.
 >
 >Am I going to gain anything by having the app do the dialing itself?
 >

You actually are going to lose something.

rate_engine not only creates a variable, it creates multiple variables for 
each route that exists for a requested number.  So you can then build a 
dial plan that will use the next best route if the original route is 
unavailable, etc.

-Chris