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Hello. Voice quality when calling - this is one of the most important in the PBX. You need to record the quality parameters for each call to improve. Because the overall quality of a call can only be determined upon completion, I did it in the HangUp handler and wrote in custom fields of CDR. This worked well in asterisk 11. In asterisk 13 I did not find a handler after the call, but before

...MMENT 'sip call-id', `hangupcause` varchar(10) CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL COMMENT 'info about hangup', `peerip` varchar(15) CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL, `recvip` varchar(15) CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL, `from_u` varchar(30) CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL, `uri` varchar(30) CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL, `useragent` varchar(30) CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL, `codec1` varchar(10) CHARACTER SET utf8 COLLATE utf8_czech_ci NOT NULL, `codec...