Overview
A modular point-to-point optical transmission device with an LCD display. It is based on FPGA chips and is easy to upgrade. The main board provides four Ethernet ports and two AUX ports for transmitting other data such as RS232/RS485/RS422 and dry contact closure, and two optical interfaces for optional 1+1 automatic protection switching (APS).
Four tributary slots accept a range of plug-in modules: 4 × E1 module, 4/8/16 × FXO/FXS module and 2 × Nx64K V.35 module. Up to four modules can be installed in any combination. Its flexibility and performance make it a practical solution for voice, data and video services.
Features
- Total 16 E1 channels, transparent transmission
- 16×2 character LCD display and built-in SNMP agent
- Console management interface (RS232)
- Optional hotline channel
- Two SFP optical interfaces, one as master and the other as slave, ensuring uninterrupted service transmission
- 1+1 optical protection switching (APS) and ALS (Automatic Laser Shutdown/Reduction)
- 4 slots for plug-in modules:
- 4 × unframed E1 module (75 Ω / 120 Ω)
- 4 × framed E1 module (75 Ω / 120 Ω), any timeslot configurable
- 4 × FXO/FXS/EM 2/4-wire/magneto telephone module
- 8 × FXO/FXS/2-line audio/magneto telephone module
- 16 × FXO/FXS/2-line audio/magneto telephone module
- 2 × V.35 module (fixed 2.048 Mbit/s)
- 2 × V.35 module (N×64 kbit/s, N = 1–32)
- 4 × RS232/422/485 or 8 × dry contact closure module
- 4 × FE-to-E1 bridge module (wire-speed 2.048 Mbit/s)
- 4 × FE Ethernet channels (wire-speed 100M), with auto-negotiation; bandwidth set in multiples of 32 kbit/s
- Ethernet ports support full/half duplex and 10/100M auto-adaptation
- VLAN function with 4 division modes to choose from
- Ethernet frame size up to 1916 bytes, configurable per port
- Comprehensive alarm functions and remote device status monitoring
- Remote E1 loopback for convenient fault detection and management
- Redundant power input: AC 180–260 V and DC -48 V
Parameters
◆ Optical Interface
| Fiber Mode | Multi-mode / Single-mode |
| Multi-mode Distance | 5 km on 62.5/125μm fiber (attenuation ≤ 3 dB/km), Wavelength 850nm |
| Single-mode Distance | 40 km on 9/125μm fiber (attenuation ≤ 0.35 dB/km), Wavelength 1310nm / 1550nm |
| Transmit Power | -12 dBm to -5 dBm (MM) / -9 dBm to -8 dBm (SM) |
| Receiver Sensitivity | -28 dBm (MM) / -27 dBm (SM) |
| Link Budget | 16 dB to 18 dB |
◆ E1 Interface
| Standard | ITU-T G.703 compliant |
| Bit Rate | 2048 Kbps ± 50 ppm |
| Line Code | HDB3 |
| Impedance | 75 Ω Unbalanced / 120 Ω Balanced |
| Jitter Performance | Complies with G.742 and G.823 |
◆ Ethernet Interface (10/100M)
| Port Rate | 10/100 Mbps, Full/Half Duplex Auto-negotiation |
| Protocols | IEEE 802.3, IEEE 802.1Q (VLAN) |
| MAC Address Table | 4096 entries |
| Connector | RJ45, Auto-MDI/MDIX supported |
◆ Voice & Data Interfaces (FXS/FXO/E&M)
| FXS Interface | Ring Voltage: 75V | Ring Frequency: 25Hz | Impedance: 600Ω | Return Loss: 40dB |
| FXO Interface | Ring Detection: 35V | Frequency: 17–40Hz | Impedance: 600Ω | Return Loss: 40dB |
| E&M 2/4-Wire | Attenuation: 0dB | Total Harmonic Distortion: <-53dB | Impedance: 600Ω |
◆ Operating Environment & Power
| Operating Temp & Humidity | -10°C to 50°C; 5%–95% RH (non-condensing) |
| Power Supply | AC 180V–260V / DC -48V / DC +24V (Power consumption ≤ 10W) |
| Dimensions & Weight | 510 × 145 × 31 mm (W × D × H) | 2.0 kg |
Specifications
| Item | Specification |
|---|---|
| Model | KDS-2PM-E16 |
| Functional Description | LCD PDH multiplexer with 4 Ethernet ports and 4 slots; ALS function; console and SNMP; 1+1 optical fiber backup |
| Port Description | 1+1 optical ports; 4 multi-function slots; 4 Ethernet interfaces; 1 × RS232 console interface; 1 × SNMP Ethernet interface; 1 × engineering order-wire telephone interface |
| Power | AC 180–260 V; DC -48 V; DC +24 V. Power consumption ≤ 10 W |
| Dimensions | 216 × 140 × 31 mm (W × D × H) |
| Weight | 3 kg |
Application
