Remote Subscriber Terminal POTS (R-POTS)
The RST POTS (R-POTS) plug-in card provides six circuits of standard loop start Plain Old Telephone Service (POTS) and supports a loop length resistance of 1830 Ohms. The R-POTS card is the Remote Subscriber Terminal (RST) counterpart to the loop terminating L-POTS plug-in card. The R-POTS card provides ring cadence following, local ring trip, on-hook transmission between ring-bursts, and forward disconnect. The card supports Call Message Waiting Indicator (CMWI).
Features
- On-hook transmission (CLASS) capability
- Forward disconnect
- 900 ff structural impedance
- 1830 ff loop length resistance (including station)
- Transient protection
- Remote test access to metallic tip and ring
- Call Message Waiting Indicator (CMWI)
Features
Scalability
You can insert the R-POTS card into any general purpose slot at a RST, allowing up to 100% slot population in a single shelf.
Voice Service
Install the R-POTS card in the RST to provide universal (TR-57) POTS service and install its counterpart, the L-POTS card, in the Local Exchange Terminal (LET). Otherwise, configure an integrated switch interface (GR-303 or TR-8) at the LET to provide the R-POTS termination.
Testing Capabilities
The R-POTS card has backplane metallic tip-ring access to enable testing using the Metallic Test Unit (MTU) plug-in card. Use the R-POTS card with non-loaded cable.
Specifications
Physical
- Height: 5.125 in (13.018 cm)
- Width: 0.563 in (1.429 cm)
- Depth: 10.5 in (26.67 cm)
- Weight: 0.5 lb (0.23 kg)
Interfaces
- Six (6) 2-wire circuits
Power Consumption
- Maximum power consumption:
- Typical power consumption: 2.0 W
Environmentals
- Temperature: -40° to +149° F (-40° to +65° C)
- Relative Humidity: 5–95% noncondensing
- Altitude: Up to 10,000 feet
Compliance
- TR-TSY-000057
- TR-TSY-000303
- GR-1089-CORE
General
- 20 mA constant current @ 1830 Ω
- End to end signaling delay (normal and reverse): < 40 msec
- Pulse distortion (pw > 50 msec): < 10 msec
- Ring trip detector (85 Vrms, 20 Hz): > 2000 Ω
- Ring trip delay (85 Vrms, 20 Hz): < 150 msec
- Maximum loop length including station: 1830 Ω
- Loop current: 25 mA constant current @ 600 Ω
- Open ckt. voltage - normal mode (battery -52 V): 46 V min
- Open ckt. voltage - on hook transmission mode: 42.5 V min
- Off-hook detection threshold: < 2.0 kΩ
- On-hook detection threshold: > 9.0 kΩ
- Audio Companding: μ-Law
- Nominal input impedance: 900 Ω
- Nominal loss (referenced to 2-wire 900 Ω): -2.0 dBm ± 0.5 dB
- Maximum VF overload level: +5.0 dBm
- Two wire return loss ERL: > 18 dB
- Longitudinal balance: > 58 dB (200 Hz - 3.0 kHz)
- Balance (compromise): 900 Ω
LED Indicators
- FAIL (red)
- BUSY (green)
Management
- Craft User Interface (CUI)
- Tellabs Panorama Element Management System (EMS)
Software Support
- Minimum base software FP16 and higher
Installations
- Supported in Tellabs 1000 CBA
Ordering Information
- R-POTS: 0110-0148