VoIP ringing slic; Temperature Range: -40°C to 85°C; Package: 28-PLCC T&R VoIP ringing slic; Temperature Range: 0°C to 70°C; Package: 28-PLCC T&R TELECOM-slic, PQCC28 VoIP ringing slic; Temperature Range: 0°C to 70°C; Package: 32-QFN T&R TELECOM-slic, PQCC32 VoIP ringing slic Family