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1.4 Specifications
Installation Manual 29
1.4.2 Characteristics
Terminal Equipment Loop Limit • PT: KX-T7600 series: 90 Ω; all other DPTs/APTs: 40 Ω
• SLT: 60 Ω including set
• Doorphone: 20 Ω
• CS: 130 Ω; PT-interface CS: 65 Ω
Minimum Leakage Resistance 15 000 Ω minimum
Maximum Number of Extension
Instruments per Line
1 for PT or SLT
2 by Parallel or eXtra Device Port connection of an APT/DPT and an SLT
3 by Digital eXtra Device Port connection of two DPTs and an SLT
Ring Voltage 75 Vrms at 20 Hz/25 Hz depending on the Ringing Load
Trunk Loop Limit 1600 Ω maximum
Hookswitch Flash/Recall Timing
Range
24 ms to 2032 ms
BRI Cards Internal ISDN Mode Supply Voltage: 40 V
Power Supply: 4.5 W per 1 line, 10 W per 4 lines (BRI4)
4.5 W per 1 line, 20 W per 8 lines (BRI8)
Power Supply Method: Phantom Power Supply
Door Opener Current Limit 24 V DC/30 V AC, 1 A maximum
External Relay Current Limit 24 V DC/30 V AC, 1 A maximum
External Sensor Current Limit Power to the external sensor is provided from the EIO4 card and must be
grounded through the EIO4 card. For the connection diagram, refer to
"2.6.4 EIO4 Card". The Hybrid IP-PBX detects input from the sensor when
the signal is under 100 Ω.
Paging Terminal Impedance 600 Ω
MOH (Music on Hold) Terminal
Impedance
10 000 Ω