Cadence Flash F200-2 Guía para resolver problemas descargar pdf (Pagina 39)

VoIP problems 39

Exercise care when you use firewall applications on the same

computer as the IP Softphone 2050.

Watchdog timers can expire when there is no UNIStim traffic on the IP

Softphone 2050.

IP Softphone 2050 not connecting to TPS

If the IP Phone displays the message "Connecting...," "Server

unreachable. Reconnecting in ...nn seconds," or "· 802.1 QoS is not

supported on your network," the IP Softphone 2050 tries to open a

UNIStim connection (socket) with the CS 1000. If the CS 1000 is up,

reachable, and the IP Softphone 2050 uses the correct IP address, the

message "Connecting..." appears only briefly and the message "Server

unreachable..." does not appear. The latter message indicates a problem

reaching the CS 1000:

•

Check the connectivity of the PC to the network. Try to ping another

station on the network that you know is up. Try to ping the CS 1000.

Check if other stations are up.

•

Verify the IP Softphone 2050 server address (IP and port) in the IP

Softphone 2050 configuration utility. Verify CS 1000 configuration to

ensure the IP Softphone 2050 request to connect is permitted (enough

ports are programmed, security is operational). In the IP Softphone

2050 configuration utility on the QoS tab, select Off, and restart the

IP Softphone 2050. Use of the trace utility or a sniffer may yield more

information about the problem.

A message "Connection Established. Reinitializing..." indicates that

the IP Softphone 2050 established a connection (socket) with the CS

1000. The IP Softphone 2050 has sent a request to the CS 1000 to

resume connection. The CS 1000 is expected to reply to the this request.

During startup, the Call Server passes the IP Softphone 2050 to various

subcomponents, causing this message to rapidly appear two or three times

during a normal startup. If the message is not a transient startup message,

then review the CS 1000 programming. The number of times the IP

Softphone 2050 passes to other subcomponents can help you identify the

problem. Use the trace utility or a sniffer to debug the problem.

IP Phone not connecting to TPS

If an IP Phone continuously registers but then reboots after the watchdog

timer period expires, check for an incorrect VLAN configuration. This can

occur when the Enable 802.1Q support check box is selected but the

IP Phone is on a Layer 2 switch that does not support VLAN tags or is

not configured. The IP Phone initially registers to the Signaling Server or

VGMC because it starts with no VLAN tagging; the TPS then enables the

VLAN tagging because you enabled VLAN priority. Because the switch

does not expect the VLAN tagged packets, which then start to arrive from

Nortel Communication Server 1000

Troubleshooting Guide for Distributors

NN43001-730 02.02 31 December 2009

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Cadence Flash F200-2 Guía para resolver problemas Pagina 39

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