r Send DTMF/voice call { 0x0040}\r
s Answer call part 1 { 0x0042,0x05,0x01,0x07,0xa2,0x88,0x81,0x21,0x15,0x63,0xa8,0x00,0x00,\r
0x07,0xa3,0xb8,0x81,0x20,0x15,0x63,0x80 }\r
r Send DTMF/voice call { 0x0040}\r
s Answer call part 1 { 0x0042,0x05,0x01,0x07,0xa2,0x88,0x81,0x21,0x15,0x63,0xa8,0x00,0x00,\r
0x07,0xa3,0xb8,0x81,0x20,0x15,0x63,0x80 }\r