2.3.2 Characteristics
Terminal Equipment Loop Limit • SLT: 600 Ω includin
set
• Doorphone: 20 Ω
Minimum Leakage Resistance 15 000 Ω minimum
Maximum Number of Extension 1 for SLT
Instruments per Line
Ring Voltage 75 Vrms at 20 Hz/25 Hz depending on the Ringing Load
Trunk Loop Limit
1600 Ω maximum
Hookswitch Flash/Recall Timin
24 ms to 2032 ms
Range
Door Opener Current Limit 24 V DC/30 V AC, 1 A maximum