Cisco 7971G-GE - IP Phone VoIP 문제 해결 및 유지 관리 - 페이지 8
{카테고리_이름} Cisco 7971G-GE - IP Phone VoIP에 대한 문제 해결 및 유지 관리을 온라인으로 검색하거나 PDF를 다운로드하세요. Cisco 7971G-GE - IP Phone VoIP 25 페이지. Unified ip phones
Cisco 7971G-GE - IP Phone VoIP에 대해서도 마찬가지입니다: 설치 준비 (17 페이지), 설치 매뉴얼 (19 페이지), 사용자 설명서 (42 페이지)
페이지 인쇄
Cisco Unified IP Phone Security Problems
Solution
In most cases, a phone restarts if it powers up by using external power but loses that connection and switches
to PoE. Similarly, a phone may restart if it powers up by using PoE and then connects to an external power
supply.
Cisco Unified IP Phone Security Problems
The following sections provide troubleshooting information for the security features on the Cisco Unified IP
Phone. For information about the solutions for any of these issues, and for additional troubleshooting
information about security, see Cisco Unified Communications Manager Security Guide.
CTL File Problems
The following sections assist in troubleshooting CTL file problems.
Authentication Error, Phone Cannot Authenticate CTL File
Problem
A device authentication error occurs.
Cause
CTL file does not have a Cisco Unified Communications Manager certificate or has an incorrect certificate.
Solution
Install a correct certificate.
Phone Cannot Authenticate CTL File
Problem
Phone cannot authenticate the CTL file.
Cause
The security token that signed the updated CTL file does not exist in the CTL file on the phone.
Solution
Change the security token in the CTL file and install the new file on the phone.
ITL File Authenticates but Other Configuration Files Do Not Authenticate
Problem
Phone cannot authenticate any configuration files other than the ITL file.
Cause
The configuration file may not be signed by the corresponding certificate in the phone Trust List.
Troubleshooting and Maintenance
8
Troubleshooting and Maintenance