mirror of git://git.sysmocom.de/ofono
fc4088fb02
An issue with iPhone 5C iOS 9.2 triggers desynchronization in call states. When an active call is put on hold and another call arrives, it is in WAITING state. It should be possible to answer it by issuing AT+CHLD=2 but the phone changes its state to INCOMING so ATA should be used. This change is advertised by sending callheld:2 event, but it is not handled. This event can be used to trigger CLCC poll to synchronize call states. +CIEV: 3,1 <- first call arrives AT+CLCC +CLCC: 1,1,4,0,0,"01234567890",129 OK RING +CLIP: "01234567890",129 ATA OK +CIEV: 2,1 +CIEV: 3,0. AT+CHLD=2.$ <- first call is put on hold OK +CIEV: 7,2 <- notification confirming that call #1 is on hold +CCWA: "09876543210",129,1 <- second call arrives +CIEV: 7,2 +CIEV: 3,1 AT+CLCC +CLCC: 1,1,1,0,0,"01234567890",129 +CLCC: 2,1,5,0,0,"09876543210",129 <- new call is still in WAITING state OK +CIEV: 7,2 <- phone iternally promotes WAITING call to INCOMING AT+CHLD=2 <- there is no WAITING call anymore, ATA should be used +CME ERROR:3 |
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