Transition POTS 2-Wire RJ11 to MM(ST) Customer side: SAPTF3311-115

Transition POTS 2-Wire RJ11 to MM(ST)

Customer side: SAPTF3311-115

Varenr: SAPTF3311-105

Connect central-office voice grade signals to distant Plain Old Telephone equipment (POTS) utilizing standard telephone signaling. Two units are required to implement an end to end system. Unit A connects to a telephone line or PBX and has the ability to detect ringing voltages and to act as a telephone (LINE SIDE FXS). Unit B is the reciprocal unit and has the ability to act as a Central Office and connects to a telephone device (CUSTOMER SIDE FXO). Devices must be used in pairs. Typical installation will include a chassis card [CAPTF] installed in the Point System™ locally and a stand-alone device installed at the remote location.

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StandardsFCC Part 68, TBR21
Analog Port(Telephone Emulation or FXS) 
Connector: RJ-11 
Impedance: 600 ohms 
REN: 0.48 
Loop Current: 20 to 60 ma. 
Insertion Loss: 0.0 +/-1.0 dB at 1000 Hz when both ports are terminated at 600 ohms
Analog Port(Central Office Emulation or FXO) 
Impedance: 600 ohms 
Battery Source: 48 VDC +/- 5V 
Ringing Supply: 90 Vp-p 
Ring Frequency: 15 – 25 Hz. (Reproduces frequency detected by side A) 
Ring Cadence: Reproduces cadence detected by side A 
(Insertion Loss: 1.0 +/- 1.0 dB @ 1000 Hz when both ports are terminated at 600 ohms
Voice Frequency300 Hz - 3 KHz
Switches/Option JumpersAutomatic Ring Down/Normal
Status LEDsLED colors are Green 
Fiber Link: ON indicates fiber link up; 
In Use: ON indicates unit in use; Flashing indicates ringing; 
Power: ON indicates power is on
Dimensions105 Model: 
Width: 3.25" [82 mm] 
Depth: 4.7" [119 mm] 
Height: 1.0" [25 mm] 
115 Model: 
Width: 3.7" [94 mm] 
Depth: 4.7" [119 mm] 
Height: 1.8" [46 mm]
PowerExternal AC/DC provided; 12 VDC, 1.25A; unregulated; standard; UL Listed
Environment0 – 50°C Operating Temperature; 
-25°C – 85°C Storage Temperature 
5% – 95% humidity (non condensing); 0 – 10,000 ft.
Shipping Weight2 lbs. (.90 kg)
Safety ComplianceWall Mount Power Supply: 
UL listed and CSA certified
Regulatory ComplianceFCC Class A; VCCI Class A; EN 55022 (CISPR 22) Class A; ICES 003; CE Mark
WarrantyLifetime