Description
Slowness in IP phones can be attributed to various factors. This article suggests the troubleshooting steps to address slowness and sluggish issues in Grandstream GRP2612 or GRP2613 IP Phones:
1. Disable CPE (TR-069) under System Settings
2. Disable ‘Send SIP Logs’ and ‘Auto Recovery from Abnormality’ under Maintenance > System Diagnostics > Syslog
3. Disable ‘User Web Access’ and ‘SSH Access’ under System Settings > Security Settings
4. Disable ‘LLDP‘ and ‘CDP’ under Network Settings > Advanced Network Settings
5. Disable IPv6 and screensaver if they are not used
6. Remove VQRTCP server and settings