Diagnostics Tools for IP
using Diagnostic Tools for IP (H.323)
Using the Diagnostics Tools for IP will require a PC and setting up a
telnet session towards the PC and the video system.
Q.931
To show Q.931 trace during a call you need to issue the command
‘
syslog on
’. One can get traces for RAS, Q.931 and H.245 with
this command. It is a complex trace and requires an extensive
knowledge in H.323 signaling to be understood.
Ping
Ping is used to see if the system is able to reach a specific
IP-address, using a mechanism in IP called ICMP. If the system
is unable to register to its Gatekeeper, or if it is unable to dial a
specific endpoint, one can use ping to see if there is at least an
IP-route to the Gatekeeper or to the endpoint. In case you have
problems, one would first ping the default gateway, then the
Gatekeeper, and then the other endpoint.
Traceroute
Traceroute does exactly that; it traces the route an IP-packet takes
to reach its destination and displays all router hops. Traceroute is
very useful for seeing exactly where there is a routing-problem
in the IP-network, and for checking where transport-delay is
introduced.
Layer 4 Ports used in H.323 calls
The layer 4 ports used by the system in a H.323 call can be
defined as follows:
•
Dynamic: The ports are allocated at random from 2048 to
65535.
•
Dynamic H323 ports are allocated at random from 11000 to
65535.
•
Static: Will use the predefined layer 4 ports listed in the tables
to the right.
More Commands to be found...
The diagnostics commands are explained in the TANDBERG MXP System Integrators Guide.
Go to:
http://www.tandberg.com/docs
and see the Application Programmer Interface section.
Point-to-Point + DuoVideo
Function
Port
Type
Gatekeeper Discovery (RAS)
1719
UDP
Q.931 Call Setup
1720
TCP
H.245
Range 5555-5574
TCP
Video
Range 2326-2385
UDP
Audio
Range 2326-2385
UDP
Data/FECC
Range 2326-2385
UDP
Mul DuoVideo
Function
Port
Type
Gatekeeper Discovery (RAS)
1719
UDP
Q.931 Call Setup
1720
TCP
H.245*
Range 5555-5574
TCP
Video
Range 2326-2485
UDP
Audio
Range 2326-2485
UDP
Data/FECC
Range 2326-2485
UDP
* While using MultiSite, if a site is disconnected and reconnected without
terminating the entire conference, the next site to be connected will
have a H.245 port outside of the specified range. If this functionality
is required through a firewall, the range of TCP ports can be extended
past 5564. However, if a site is disconnected and reconnected, without
ending the conference enough times one can quickly end up outside of
this range again.
144
Cisco TelePresence MXP Series
Administrator guide
D14791.01 MXP Series Administrator Guide F90, August
2011.
Copyright © 2010-2011 Cisco Systems, Inc. All rights reserved.
www.cisco.com
Contents
Contact us
Introduction
The menu structure
The settings library
Getting started
Appendices
Appendices
