1.3 Specifications
20 Installation Manual
1.3.2 Characteristics
Terminal Equipment Loop Limit PT 40 Ω
SLT 600 Ω including set
Doorphone 20 Ω
Minimum Leakage Resistance 15 000 Ω minimum
Maximum Number of Extension
Instruments per Line
1 PT or SLT in standard connection
1 PT and 1 SLT in parallel connection
Ring Voltage 75 Vrms at 20 Hz/25 Hz depending on the ringing load
Outside (CO) Line Loop Limit 1600 Ω maximum
Hookswitch Flash/Recall Timing
Range
24 ms–2032 ms
Door Opener Current Limit 30 V DC/30 V AC, 3 A maximum
Paging Terminal Impedance 600 Ω
MOH Terminal Impedance 10 000 Ω