040000 tree 780f3a549ebeea233521ce09f86b46c704a48ad2	backends
040000 tree d50aebf52b13d971fca486a8254f11b0c57c5b09	mock
040000 tree 87c5dcda572a78517ac446eb81a018873e20e8b1	modem_chat
040000 tree 5a39bfbb5fcd29c3f7da322c3804e82a8cd548fa	modem_cmux
040000 tree 437b7dd7c8f4e20b3c03bdbf6c11df2452552b84	modem_ppp