Failed to authenticate with the device at ip.ip.ip.ip using TELNET

Question

Hi!
I can no longer use CCA :-)
I tried everything, but when I enter user and password after waiting a few tens of seconds I get the following error window: "Failed to authenticate with the device at ip.ip.ip.ip using TELNET. TELNET access is required for access to voice configuration. Cannot continue. Exiting CCA."
Given that I do not understand the need to use the 'telnet', I verified that UC500 was reachable from the PC via telnet. But CCA 2.2.5 don't work and I find no reason, even logging on to see go console error messages or anything else that turn me to the solution. Before removing CCA and back to 2.2.4, I see if I could solve the problem somehow.
I tried to see what was going on the network with wireshark:
Time          Source          Destination     Protocol     Info
722.508214     pc.pc.pc.128     uc.uc.uc.1     TELNET     Telnet Data ... (the password in clear text!!!!)
722.713551     uc.uc.uc.1     pc.pc.pc.128     TCP     telnet > xs-openstorage [ACK] Seq=80 Ack=37 Win=4092 Len=0
722.713606     pc.pc.pc.128     uc.uc.uc.1     TELNET     Telnet Data ... (a '/r/n' after send user pwd on previus pkt)
722.911528     uc.uc.uc.1     pc.pc.pc.128     TCP     telnet > xs-openstorage [ACK] Seq=80 Ack=39 Win=4090 Len=0
724.608892     pc.pc.pc.128     uc.uc.uc.1     TCP     xs-openstorage > telnet [FIN, ACK] Seq=39 Ack=80 Win=65456 Len=0
724.611192     uc.uc.uc.1     pc.pc.pc.128     TCP     telnet > xs-openstorage [ACK] Seq=80 Ack=40 Win=4090 Len=0
724.721538     uc.uc.uc.1     pc.pc.pc.128     TELNET     Telnet Data ... (a '/r/n')
724.721589     pc.pc.pc.128     uc.uc.uc.1     TCP     xs-openstorage > telnet [RST, ACK] Seq=40 Ack=82 Win=0 Len=0
...but do not understand why the PC ends the connection!
NB: Obviously the username and password are correct and the UC does not report login errors.
Can anyone give me a hint? 1k thanks
73,
Arturo

Answer 1

Most files are 0 bytes long, only Application_Log report some output:
++: DEBUG:  : User Preference Settings App Version=2.2 (5)
++: DEBUG:  : Current App Version=2.2 (5)
++: DEBUG:  : *** Site name: DIM - Lab
++: DEBUG:  : *** Remove site from history list: DIM - Lab
++: DEBUG:  : Last used connection string: http://DIM+-+Lab:80/
++: DEBUG:  : Filtered connection string: DIM+-+Lab
++: DEBUG:  : SiteName : DIM+-+Lab DecodedName: DIM - Lab
++: DEBUG:  : DIM - Lab is customer site name: true
++: DEBUG:  : Set connection string to: ---.---.---.---
++: DEBUG:  : Filtered connection string: DIM+-+Lab
++: DEBUG:  : Duration for [upd Mirror<--Device() @ com.cisco.cpnm.features.defn.connect.ConnectDialogTask] = [1265] msec.
++: DEBUG:  : *** Site name: DIM - Lab
++: DEBUG:  : *** Remove site from history list: DIM - Lab
++: DEBUG:  : Last used connection string: http://DIM+-+Lab:80/
++: DEBUG:  : Filtered connection string: DIM+-+Lab
++: DEBUG:  : SiteName : DIM+-+Lab DecodedName: DIM - Lab
++: DEBUG:  : DIM - Lab is customer site name: true
++: DEBUG:  : Set connection string to: ---.---.---.---
++: DEBUG:  : Filtered connection string: DIM+-+Lab
++: DEBUG:  : Filtered connection string: DIM+-+Lab
++: DEBUG:  : Filtered connection string: DIM+-+Lab
++: DEBUG:  : WDTask::setHierarchy .TroubleshootingLogsTask
++: DEBUG:  : Duration for [create() @ com.cisco.cpnm.features.defn.logs.TroubleshootingLogsTask] = [78] msec.
NB: I understand that the program tries to connect using something invented name of the site?
I create another site with a valid DNS name and I try to connect... Last log lines are:
++: DEBUG:  : conn string: HTTP://valid.name.tld:80/
++: DEBUG:  : ConnectionMediator:connect() : http://valid.name.tld:80/
++: DEBUG:  : URL After Decoding :http://valid.name.tld:80/
++: DEBUG:  : ConnectionMediator:isFederation() : http://valid.name.tld:80/
++: DEBUG:  : initAppMode():http://valid.name.tld:80/
++: DEBUG:  : ConnectionMediator:isFederation() : http://valid.name.tld:80/
++: DEBUG:  : initAppWithConnection():http://valid.name.tld:80/
++: DEBUG:  : Found Module For device type : UC540W-BRI-K9
++: DEBUG:  : *** RouterInfo.ShVer.Fields=[UC540W-BRI-K9, cme, 1 day  23 hours  49 minutes, flash:uc500-advipservicesk9-mz.150-1.XA2, , 15.0(1)XA2, N, N, , UC500-ADVIPSERVICESK9-M, , 1 ]
++: DEBUG:  : AuthGrp@1978622: getAuthCreds() called for: telnet://uc.uc.uc.1:23; realm: null
++: DEBUG:  : AuthGrp@1978622: getAuthCreds() called for: telnet://uc.uc.uc.1:23; realm: null
++: DEBUG:  : AuthGrp@1978622: getAuthCreds() called for: telnet://uc.uc.uc.1:23; realm: null
73