Hi List
We have deployed AS54K, IOS 12.3(4)T8, Nextport version 0.8.12
I found the " Hst No Carr" number is too big (1657/11144 = 14.9%).
We have more than half of calls (1/2) from users, using V90/V44. I have implemented the V.44 Nextport modem issue with V.44 Tx/Rx Codewords : 1024.
as1-hn>sh spe modem csr sum
Avg Hold Inc calls Out calls Failed No Succ
Time Succ Fail Avail Succ Fail Avail Dial Answer Pct
00:18:51 11144 826 257 0 0 257 0 0 93%
as1-hn>sh spe modem dis sum
===CLASS OTHER==== ====CLASS DSP===== ====CLASS HOST==== ===CLASS EC LCL===
Software Rst 0 No Carrier 8 Hst NonSpec 0 No LR 0
EC Termntd 0 No ABT dtctd 0 Hst Busy 0 LR Param1 0
Bad MNP5 Rx 0 Trainup flr 205 Hst No answr 0 LR Incmpt 0
DC General 10 Retrain Lt 0 Hst DTR 3517 Retrns Lt 9
Bad COP stat 0 ABT end flr 0 Hst ATH 0 Inactivity 0
ATH 0 COT Ack 0 Hst NoDialTn 0 Protocol Err 0
Aborted 0 COT Nak 1 0 Hst No Carr 1657 Fallbck Term 1
Connect Tout 111 COT Nak 2 0 COT Off 0 No XID 9
Reset DSP 0 MOH Clr Down 0 COT Timeout 0 XID Incmpt 0
DC Codeword 51 MOH Timeout 0 Hst Ack 0 Disc 6118
DC Empty Nd 0 DM 0
DC Large Tok 171 ===CLASS EC LD==== ==CLASS EC FRMR=== Bad NR 0
DC Reserved 1 LD No LR 0 Frmr Bad Cmd 0 SABME Online 0
DC Char Size 0 LD LR Param1 0 Frmr Data 0 XID Online 0
DC Rx Dict 38 LD LR Incmpt 0 Frmr Length 0 LR Online 0
DC Rx Hist 0 LD Retrns Lt 0 Frmr Bad NR 0
DC Rx String 0 LD Inactivty 0 =====N O N E======
DC Negotiate 0 LD Protocol 0 ===CLASS EC CMD=== None 43
DC Compress 0 LD User 0 Bad Cmd 0
TOTAL 11949
Our customers claim a lot about the unexpected disconnections. That means we should investigate more.
I have opened a TAC case # 600427353 for nearly 02 months and Vadim Zakharine [vzakhari@cisco.com] is the owner now.
The main cause is when some specific condition happen (don’t now yet), the Next port modem and client modem retrain to find a new speed.
If the retrain success, they continue to work.
If the retrain fail, Nextport itseld terminate and make the call dropped with DR 0x1F06 for Nextport and DR 0xDF06 for MICA.
Any idea?
Brgds
Hoa
