Below are the indications for Turkey per ITU-T Recommendation E.180
All changes go to the indications.conf file;

[general]
country=tr

[tr]
description = Turkey (Türkiye) / Europe
ringcadance = 2000,4000
dial = 450
busy = 450/500,0/500
ring = 450/2000,450/4000
congestion = 450/200,0/200,450/200,0/200,450/200,0/200,450/600,0/200
disconnect = 450/200,0/200,450/200,0/200,450/200,0/200,450/600,0/200
callwaiting = 450/200,0/600,450/200,0/8000
dialrecall = 450/1000,0/250
record = 1400/500,0/15000
info = !950/300,!1400/300,!1800/300,!0/1000,!950/300,!1400/300,!1800/300,!0/1000,!950/300,!1400/300,!1800/300,!0/1000,0

For Zaptel FXO users:

Edit zonedata.c and add the zone data below;

       { NN, "tr", "Turkey", { 2000, 4000 },  /* Don't Forget to change NN to a number */
         {
                 /* Reference: http://www.itu.int/ITU-T/inr/forms/files/tones-0203.pdf */
                 { ZT_TONE_DIALTONE, "450" },
                 { ZT_TONE_BUSY, "450/500,0/500" },
                 { ZT_TONE_RINGTONE, "450/2000,0/4000" },
                 { ZT_TONE_CONGESTION, "450/200,0/200,450/200,0/200,450/200,0/200,450/600,0/200" },
                 { ZT_TONE_CALLWAIT, "450/200,0/600,450/200,0/8000" },
                 { ZT_TONE_DIALRECALL, "450/1000,0/250" },
/* RECORDTONE - not specified */
                 { ZT_TONE_RECORDTONE, "1400/500,0/15000" },
                 { ZT_TONE_INFO, "!950/300,!1400/300,!1800/300,!0/1000,!950/300,!1400/300,!1800/300,!0/1000,!950/300,!1400/300,!1800/300,!0/1000,0" },
                 { ZT_TONE_STUTTER, "450/1000,0/250" },
         },
       },

recompile your zapata drivers,
go to /etc/zapata.conf and change;
loadzone=us (or whatever)
defaultzone=us (or whatever)
to;
loadzone=tr
defaultzone=tr


For linksys / sipura use this adress
http://www.3amsystems.com/wireline/tone-search.htm?start=0&kCountry=178&format=Sipura