Cadence Flash F200-2 Guia de Resolução de Problemas descarregar pdf (Página 49)

IP network troubleshooting 49

General troubleshooting suggestions

Because the IP Phone depends on the IP network to communicate with

other IP Phones, problems on the LAN or WAN can cause a variety of

voice quality and usage issues. The following are some suggestions to

determine if the network is causing problems:

•

Make sure the ELAN, TLAN, and node IP addresses are properly

configured on the VGMC or Signaling Server. Every card has unique

ELAN and TLAN interface IP addresses. The node IP is shared among

the cards and is programmed on the TLAN interface of the current

Master.

Note:

Use separate subnets for the ELAN and TLAN interfaces.

—

ELAN (Embedded LAN): carries maintenance, administration, and

alarm data between EM and the VGMC/Signaling Servers. It also

carries RUDP/TCP signaling traffic between the Call Server and the

VGMC/Signaling Servers. All ELAN addresses for all nodes must

be on the same subnet and must be the same as the Call Server

CPU subnet.

—

TLAN (Telephony LAN): carries RUDP and RTP packet data

between VGMC/Signaling Server and IP Phones. The TLAN

addresses in all devices in a node must be on the same subnet.

—

CLAN (Customer LAN): regular customer LAN for PCs. Protect

the VGMC/Signaling Server TLAN from the broadcast traffic that

can regularly occur on the CLAN by isolating it to its own VLAN.

Turn off Spanning Tree, or configure ports as fast port enable, fast

learning.

—

Node IP (on the TLAN subnet): used by IP Phones to register with

the node. This address is shared by the devices; it is assigned to

the TLAN interface of the current Master.

•

Check the configuration of the switch or router ports connected to the

VGMC/Signaling Server and IP Phones (see “TLAN packet loss errors”

(page 51)).

• Check the faceplate indicators on the SMC cards as follows:

—

SMC:

– Is either the 100 or 10 LED on for both the ELAN and TLAN

(indicating the respective interface is connected to the switch)?

Is the speed as you expect given the configuration?

— Does the ELAN and TLAN A LED flash when Receive (RX) or

Transmit (TX) traffic occurs on the respective interface?

Nortel Communication Server 1000

Troubleshooting Guide for Distributors

NN43001-730 02.02 31 December 2009

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