I'm currently experiencing a 3 to 4 sec delay in call setup. Every time an extension on the PBX side dials an IP extension, it takes about 3 sec before we hear a ring tone.
I checked the debug on the Cisco side, and according to the time stamps, there is a difference of 3 sec between the fist digit of the called party and the last digit of the caller ID. Moreover, there is approximately a 100ms delay from the time the Cisco router send an acknowledgment and receiving the next digit from the PBX!!
Is there a way to speed up this process? What are the parameters that can be changed in order to affect this setup time?
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