Cisco Cisco TelePresence Video Communication Server Expressway
IM and Presence Service realm changes
Provisioning failures can occur when the IM and Presence Service realm has changed and the realm data on
the VCS Control has not been updated.
the VCS Control has not been updated.
For example, this could happen if the address of an IM and Presence Service node has changed, or if a new
peer has been added to an IM and Presence Service cluster.
peer has been added to an IM and Presence Service cluster.
The diagnostic log may contain an INFO message like "Failed to query auth component for
SASL mechanisms
SASL mechanisms
" because the VCS Control cannot find the realm.
Go to
Configuration > Unified Communications > IM and Presence Service nodes
and click Refresh
servers and then save the updated configuration. If the provisioning failures persist, verify the IM and
Presence Service nodes configuration and refresh again.
Presence Service nodes configuration and refresh again.
Jabber cannot sign in due to XMPP bind failure
The Jabber client may be unable to sign in ("Cannot communicate with the server” error messages) due to
XMPP bind failures.
XMPP bind failures.
This will be indicated by resource bind errors in the Jabber client logs, for example:
XmppSDK.dll #0, 201, Recv:<iq id='uid:527a7fe7:00000cfe:00000000' type='error'><bind
xmlns='urn:ietf:params:xml:ns:xmpp-bind'/><error code='409' type='cancel'><conflict
xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/></error></iq>
XmppSDK.dll #0, CXmppClient::onResourceBindError
XmppSDK.dll #0, 39, CTriClient::HandleDisconnect, reason:16
No voicemail service ("403 Forbidden" response)
Ensure that the Cisco Unity Connection (CUC) hostname is included on the HTTP server allow list on the
VCS Control.
VCS Control.
"403 Forbidden" responses for any service requests
Services may fail ("403 Forbidden" responses) if the VCS Control and VCS Expressway are not
synchronized to a reliable NTP server. Ensure that all VCS systems are synchronized to a reliable NTP
service.
synchronized to a reliable NTP server. Ensure that all VCS systems are synchronized to a reliable NTP
service.
Client HTTPS requests are dropped by VCS
This can be caused by the automated intrusion protection feature on the VCS Expressway if it detects
repeated invalid attempts (404 errors) from a client IP address to access resources through the HTTP proxy.
repeated invalid attempts (404 errors) from a client IP address to access resources through the HTTP proxy.
To prevent the client address from being blocked, ensure that the HTTP proxy resource access failure
category (
category (
System > Protection > Automated detection > Configuration
) is disabled.
Unified Communications Mobile and Remote Access via Cisco VCS Deployment Guide (X8.5.1)
Page 47 of 50
Appendix 1: Troubleshooting