Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
Client Reconnection Times After Loss of Service
The time taken for a client to reconnect to the XMPP service depends on the re-login limits specified in the Cisco
Server Recovery Manager service parameters on the IM&P server.
Server Recovery Manager service parameters on the IM&P server.
for the IM&P version that you are running.
Temporary or Partial Loss of IM and Presence Service Federation
XMPP federation for IM and Presence Service via VCS relies on a persistent TCP connection to the federated server.
If a federated server becomes unavailable due to a graceful shutdown, VCS will immediately seek to reestablish a
connection with the federated server or with another server advertised by the federated partner.
If a federated server becomes unavailable due to a graceful shutdown, VCS will immediately seek to reestablish a
connection with the federated server or with another server advertised by the federated partner.
If, however, the federated server fails abruptly, it can take up to 15 minutes for VCS to discover the TCP connection
outage and attempt reconnection. During this time, a partial or full loss of IM and Presence Service connectivity with
the federated partner may occur.
outage and attempt reconnection. During this time, a partial or full loss of IM and Presence Service connectivity with
the federated partner may occur.
Jabber Guest Services Overview
Cisco Jabber Guest is a consumer to business (C2B) solution that extends the reach of Cisco's enterprise telephony
to people outside of a corporate firewall who do not have phones registered with Cisco Unified Communications
Manager.
to people outside of a corporate firewall who do not have phones registered with Cisco Unified Communications
Manager.
It allows an external user to click on a hyperlink (in an email or a web page) that will download and install (on first use)
an H.264 plugin into the user's browser. It then uses http-based call control to "dial" a URL to place a call to a
predefined destination inside the enterprise. The user is not required to open an account, create a password, or
otherwise authenticate.
an H.264 plugin into the user's browser. It then uses http-based call control to "dial" a URL to place a call to a
predefined destination inside the enterprise. The user is not required to open an account, create a password, or
otherwise authenticate.
To enable the call to be placed, it uses the Expressway solution (a secure traversal zone between the VCS Control
and VCS Expressway) as a Unified Communications gateway to traverse the firewall between the Jabber Guest client
in the internet and the Jabber Guest servers inside the enterprise to reach the destination user agent (endpoint).
and VCS Expressway) as a Unified Communications gateway to traverse the firewall between the Jabber Guest client
in the internet and the Jabber Guest servers inside the enterprise to reach the destination user agent (endpoint).
Figure 9 Jabber Guest Components
101
Cisco TelePresence Video Communication Server Administrator Guide
Unified Communications