<a name="_GoBack"></a>Hello all together, i have a problem with the TCL script mentioned in the subject. I´m using this script on a Cisco 2900 Router which is configured as a voice gateway. The Router uses the firmware 15.1(4)M1 The script uses a CNG tone to detect if a fax is incoming or a normal voice call. The background for this task is that we want to use only one number for voice and fax The problem is that the tcl script needs 6 – 9 seconds to detect that there is a fax incoming. We want to reduce the detection time to 3 seconds. But I don´t know how to do this in the script. I hope somebody here can help me on this. Attached you can find the script that I am using on the router. If you need an further information please let me know. Thanks in advance!