O que fazer quando o telefone não consegue obter um endereço IP?

Introdução

Visão Geral

Este documento apresenta orientações de solução de problemas para dois cenários comuns onde o telefone não consegue obter endereço IP.

Cenário 1: O telefone e o PC são conectados à mesma porta de switch ou roteador pelo mesmo cabo de rede. O PC obtém IP, o telefone não.

Cenário 2: O telefone e o PC são conectados à mesma porta de switch ou roteador pelo mesmo cabo de rede. Nenhum dos dispositivos obtém IP.

Modelos Compatíveis

Público-Alvo

Este material é destinado à equipe de manutenção e suporte responsável pelo atendimento e resolução de falhas dos telefones.

Solução de Problemas

Cenário 1

Sintoma
O telefone e o PC compartilham a mesma conexão de rede; o PC recebe IP válido e o telefone não.

Causas Prováveis
1. O VLAN está habilitado no telefone, mas a rede não utiliza VLAN, ou as configurações estão incorretas.
2. Conflito de endereços IP na rede local.
3. O roteador realiza vinculação de MAC apenas para o PC.
4. O switch usa autenticação 802.1X; o PC já está autenticado e o telefone não.

Soluções
1. Desative o VLAN no telefone ou ajuste as configurações corretas. Recomenda-se desativar LLDP e VLAN. Consulte o item 3.1.
2. Atribua um IP estático ao telefone. Consulte o item 3.2.
3. Remova a vinculação MAC ou adicione o MAC do telefone na lista liberada.
4. Desative a autenticação 802.1X no switch ou configure a autenticação no telefone.
5. Restaure as configurações de fábrica para eliminar falhas de configuração. Item 3.3.

Cenário 2

Sintoma
Telefone e PC conectados ao mesmo switch não conseguem obter IP.

Causas Prováveis
1. Tempestade de tráfego na rede local.
2. DHCP desabilitado ou falha no roteador.
3. Esgotamento do pool de endereços DHCP.
4. Cabo de rede defeituoso.

Soluções
1. Solicite verificação da rede. Ícone de raio no telefone indica anomalia de tráfego.
2. Teste com IP estático. Item 3.2.
3. Amplie o pool DHCP alterando a máscara de subrede.
4. Troque o cabo ou teste o telefone em outra rede.

Métodos de Configuração

Desativar VLAN no Telefone

Na tela LCD do telefone, acesse Menu - Configurações - Configurações Avançadas (senha: 123 ou admin) - Rede - QoS e VLAN - VLAN da Porta WAN - Desativar e salve:

Desativar VLAN no telefone

Configurar IP Estático no Telefone

Na tela LCD do telefone, acesse Menu - Configurações - Configurações Avançadas (senha: 123 ou admin) - Rede - Configurações de Rede - IPv4, selecione IP Estático, insira os dados e confirme:

Configurar IP estático

Restaurar Padrões de Fábrica

Na tela LCD do telefone, acesse Menu - Configurações - Configurações Avançadas (senha: 123 ou admin) - Redefinição de Fábrica:

Restaurar configurações de fábrica

Catálogo
Atendimento ao cliente Telefone
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