전화기가 IP 주소를 얻을 수 없을 때 어떻게 해야 합니까?

소개

개요

본 문서는 전화기가 IP 주소를 받지 못하는 두 가지 일반적인 상황에 대한 문제 해결 방안을 제공합니다.

상황 1: 전화기와 PC가 동일 네트워크 케이블로 스위치 또는 라우터의 동일 포트에 연결됨. PC는 IP를 정상 수신하지만 전화기는 수신하지 못함.

상황 2: 전화기와 PC가 동일 포트에 연결되었으며, 두 기기 모두 IP 주소를 받지 못함.

적용 기기

대상 사용자

본 문서는 전화기 일일 장애 처리 및 유지보수 담당 인력과 지원 직원을 대상으로 합니다.

문제 해결

상황 1

증상
동일 네트워크 환경에서 PC는 IP를 정상 획득하지만 전화기는 획득하지 못합니다.

가능한 원인
1. 전화기에 VLAN이 활성화되었으나 네트워크에서 사용하지 않거나 설정이 잘못됨.
2. 네트워크 내 IP 주소 충돌 발생.
3. 라우터 MAC 바인딩이 PC만 등록됨.
4. 스위치 802.1X 인증 사용, PC는 인증 완료 전화기는 미설정.

해결 방안
1. 전화기 VLAN을 비활성화하거나 정상 설정. LLDP 기능도 비활성화 권장. 3.1 참고.
2. 전화기에 고정 IP를 할당합니다. 3.2 참고.
3. MAC 바인딩 설정 제거 또는 전화기 MAC을 허용 목록에 추가.
4. 스위치 802.1X 인증 비활성화 또는 전화기에 인증 설정 추가.
5. 공장 초기화 후 재확인. 3.3 참고.

상황 2

증상
동일 스위치에 연결된 전화기와 PC가 모두 IP를 받지 못합니다.

가능한 원인
1. 내부 네트워크에 트래픽 폭풍 발생.
2. 라우터 DHCP 비활성화 또는 기기 고장.
3. DHCP 주소 풀 고갈.
4. 네트워크 케이블 불량.

해결 방안
1. 네트워크 관리자 확인 필요. 전화기 우측 상단 번개 아이콘은 네트워크 이상을 의미합니다.
2. 고정 IP로 테스트 진행. 3.2 참고.
3. 서브넷 마스크 변경으로 DHCP 범위 확장.
4. 케이블 교체 또는 다른 네트워크 환경에서 테스트.

설정 방식

전화기 VLAN 비활성화

전화기 화면에서 메뉴 - 설정 - 고급 설정(비밀번호: 123 또는 admin) - 네트워크 - QoS 및 VLAN - WAN 포트 VLAN - 비활성화 후 저장:

전화기 VLAN 비활성화

전화기 고정 IP 설정

전화기 화면에서 메뉴 - 설정 - 고급 설정(비밀번호: 123 또는 admin) - 네트워크 - 네트워크 설정 - IPv4 진입 후 네트워크 유형을 고정 IP로 변경하고 정보 입력 후 확인:

고정 IP 설정

전화기 공장 초기화

전화기 화면에서 메뉴 - 설정 - 고급 설정(비밀번호: 123 또는 admin) - 공장 초기화

전화기 초기화

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