Cadence Flash F200-2 Guia de Resolução de Problemas descarregar pdf (Página 45)

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VoIP problems 45

codec expected. When no codecs match between the two lists, the call

fails and an error message prints on the Call Server stating that no codec

match can be found.

Check this condition by entering the command “rlmShow ” (page 371) at

the Call Server pdt prompt. This prints the codecs configured on all

telephones and gateway channels. If a configuration problem occurs,

different lists for different phones and gateway channels print; ensure that

the list is identical for every device.

In summary, to avoid errors whenever card properties change, you must

download the change to all cards in the node. If this is done, this problem

won‘t occur.

No dial tone on IP Phones when registered to Call Ser ver with dual

CPU

If your phones are registered but you receive no dial tone, check that

the VGMC to which your telephone is registered is talking to the active

Call Server CPU. On the VMGC, use the

rudpShow and pbxLinkShow

commands (see “rudpShow” (page 229) and “pbxLinkShow” (page 217))

to verify that the card communicates with the proper CPU. On the Call

Server, you can check the network configuration by using the LD 117 prt

elnk command.

Input errors on the switch side or connection failure

If you find that you receive numerous input errors on the switch side or if

a connection fails, it may be due to an ELAN/TLAN port misconfiguration

between the expected speed and duplex and the actual values.

The Media default settings are as follows:

ELAN: 10M/Half

TLAN: Auto-negotiate

Therefore, if the switch ports are Auto-negotiate, which is the

recommended setting, then the ports should show

ELAN: 10M/Half

TLAN: 100M/Full

However, some cards appear where the ports are configured as follows:

ELAN: 100M/Full

TLAN: 10M/Half

Nortel Communication Server 1000

Troubleshooting Guide for Distributors

NN43001-730 02.02 31 December 2009

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