USB cpe and AP320

I testing usb device 802.16e. USB good see Base 320 no not may connected.
AP 320 send syslog log with error
What is error?
MAC: Received MAC Message 4, RNG_REQ, cid 0
MAC: RNG REQ received on CID 0, seg 0
MAC: LM - MSS create - MSSID = 8, Basic CID = 9, isRealloc = 0
RA: RA create MSS with mssid 8
SCH: Add MSS 8 to Polling List
MR6: MR6 - Send 0 msg to R6
DAN: DAN_R6: DAN received MR6 message (type=0)
DAN: DAN_handle_RNG_capab: basic = 9, primary=521, mac addr=0
MAC: Received MAC Message 26, SBC_REQ, cid 9
MR6: MR6 - Send 1 msg to R6
DAN: DAN_R6: DAN received MR6 message (type=1)
MAC: Received MAC Message 27, SBC_RSP, cid 9
MAC: Received MAC Message 6, REG_REQ, cid 521
MR6: MR6 - Send 2 msg to R6
DAN: DAN_R6: DAN received MR6 message (type=2)
MR6: R6M - handle msg from R6 with error parameter. This message isn’t sent to MAC
DAN: DAN_R6: DAN received MR6 message (type=13)
DAN: DAN_R6 handle error message from MR6. Msg type=8. Error transaction id=37. errno=2