NTT docomo FOMA N702iS Manual page 480

List of disconnection reasons
Disconnection reasons regarding the content of requests are as follows:
■ Packet communication
Value
26 Missing or incorrect APN.
27
30 Activation rejected by the network.
33 Requested service option not subscribed.
36 Disconnected successfully.
■ 64K data communication
Value
1 The specified number does not exist.
16 Disconnected successfully.
17 Cannot communicate because the other party's line is busy.
18 Dialed, but no response within the specified time.
19 Cannot communicate because the other party is ringing.
21 The other party has rejected the communication.
63 The service or option of the network is not valid.
65 A transmission capacity not provided has been specified.
88 Sent to a terminal with different terminal attributes or received call.
Reason
Reason
59