Polycom ViewStation EX Administrator's Manual page 139

Symptom
The system displays
an error message
when you place an IP
call.
The PBX does not
accept calls of type
"unknown" from the
PRI network
interface module
A system using a
V.35/RS-449/RS-530
interface cannot
receive calls at
certain speeds
Cannot select 112 or
128 speeds for
bonding calls from
the speed selection.
Cannot complete
calls to sites that do
not use encryption
© Polycom, Inc.
System Cause
All The system is not connected
to the LAN.
The system's LAN cable is
bad.
The far site is not available.
The system is not configured
correctly for the network.
The IP Gateway/Gatekeeper
is not operating or is not
configured correctly.
All The PRI network interface is
not configured correctly
All V.35/RS-449/RS-530 systems
cannot determine how to
allocate bandwidth for call
speeds that are divisible by
both 56 and 64 (such as 448K:
8 x 56K), so the call cannot be
connected correctly.
All These speeds do not show
when you select the speed
icon.
All The system displays a
message stating that
encryption is required.
Chapter 7 - Diagnostics and General Troubleshooting
Solution
Verify that the system's LAN cable is
connected properly.
Replace the system's LAN cable.
Use the ViewStation web interface to
run the Ping test (Set Up System>
Diagnostics > Ping) to determine
whether the far site is accessible to
your system. If the test fails, the far site
system is unavailable.
Check your IP configuration. For
detailed instructions, see
IP Calling on page
Contact your network administrator.
Verify that you have configured the
system's PRI network interface
correctly. For detailed instructions, see
Configuring the PRI Network Interface
on page 3-15.
Call the far site, or have the caller try
again at a different call speed.
Add line speeds on the Admin
Settings > Video Network > Dialing
Speeds screen.
Your system is configured to require all
calls to be encrypted, and encryption is
not available at the far site.
Configuring
3-5.
7-17