System information

Open and resolved caveats in TC6

Reference ID Summary

breaking the serial port communication to a VX Tactical or VX Clinical Assistant 1.2.

TC5 does not require login on serial port. In TC6.x.x and TC6.1.x the workaround is to

remove the system password.

Protocol

Reference ID Summary

CSCuh78102

A system may lose its H323 registration after boot.

CSCuh25060

TC6.1 endpoint calling via H.323 through VCS to an MXP fails to connect due to

“master slave negotiation failure”.

CSCuh11244

The TC side releases BFCP connection between Jabber Video and TC endpoint. This

drops the presentation, so it has to be restarted. Does not occur in TC-TC or JV-JV

calls. On the session refresh the TC endpoint should answer with floor status

(GRANTED) instead of RELEASED.

CSCuh50086

H323 Multiway Accept & Merge fails in 6.1.0, 6.1.1 and 6.1.2.

CSCug13548

The remote service supports the use of medium strength SSL ciphers.

CSCug13558

The remote host supports the use of anonymous SSL ciphers. While this enables an

administrator to set up a service that encrypts traffic without having to generate and

configure SSL certificates, it offers no way to verify the remote host’s identity and

renders the service vulnerable to a man-in-the-middle attack.

CSCue55239

Ghost call. It appears that the codec is calling itself automatically. Placing a codec on

a public IP will cause calls from SIP scanners. These scanners (e.g. SipVicious) are

used to detect possibilities for exploiting PSTN trunks. To avoid this perform the two

configuration changes: xConfiguration SIP ListenPort: Off and xConfiguration SIP

Profile 1 Outbound: On. Disabling ListenPort stops the endpoint from listening on port

5060/5061. Enabling outbound means that all incoming and outgoing call will re-use

the connection open from the endpoint to the VCS from the initial SIP REGISTER

message.

CSCuf06723

After the first hold/resume an H.323 endpoint may no longer see shared content.

CSCue59199

When a SIP authentication challenge is received that has both, digest should be

preferred over NTLM.

Touch 8

Reference ID Summary

CSCue78225

Presentation dialog defaults to secondary camera instead of PC input when

presentation is pressed when PC is default presentation source.