It deponds upon the application. If you are expecting the calls from PSTN, SIP server / external sip gateways may be required. If only IP users are expected, no SIP server / gateway should be required.
 
This is my openion...
 
Thanks
Sharad, India
 
 
 ----- Original Message -----
From: Jason b.a
To: freeswitch-users@lists.freeswitch.org
Sent: Thursday, February 17, 2011 5:21 AM
Subject: [Freeswitch-users] IVR application

Hey guys,
i need to implement an IVR application, but i am wondering if it is required to use a SIP SERVER between my IVR application and FREESWITCH.
thank you