KDS-2E1P30 provides 2 E1 access interfaces with E1 1+1 backup protection. It offers 30 telephone channels output. When the primary E1 link fails, the backup E1 automatically takes over, ensuring uninterrupted service. Its core circuitry employs a full digital design, ensuring reliable and stable operation, low power consumption, high integration, compact size, and ease of installation and maintenance.
Our E1 Voice Multiplexer KDS-2E1P30 provides 2 E1 access interfaces, featuring 1+1 link backup protection functionality, and offers 30 telephone channels (FXS/FXO) output.
Its core circuitry employs a full digital design, ensuring the unit operates with reliability and stability. It is characterized by low power consumption, high integration, compact size, and ease of installation and maintenance.
1. Core Technology: Utilizes proprietary intellectual property (IP) high-performance integrated circuits.
2. E1 Standard & Clocking: The E1 interface fully complies with ITU-T G.703 recommendations, featuring built-in all-digital clock recovery and smooth phase-locked loop (PLL) technology; offers two clock modes: E1 Master Clock and E1 Line Clock.
3. 1+1 Link Backup: Provides two E1 interfaces supporting 1+1 link backup protection. When the primary E1 link fails, the backup E1 takes over automatically, ensuring uninterrupted service.
4. Capacity & Services: Provides 1 to 30 voice channels; full-channel support for Caller ID, Reverse Polarity Billing, and Fax functionality.
5. Rich Voice Interfaces: Flexible support for FXO/FXS/Two-Four Wire E&M/Two-Four Wire Audio/Magneto Telephone interfaces; FXO interfaces connect to PBX, and FXS interfaces connect to user telephones.
6. Routing & Interoperability: Telephone interfaces support automatic routing for inter-site dialing (mutual number dialing between sites).
7. Intelligent Fault Detection: Able to detect whether the loss of E1 signal is due to remote equipment power-off or an E1 line fault.
8. Testing & Maintenance: Provides Pseudo-Random Code Testing functionality (PATT), which can be used as an E1 bit error rate tester (BERT) for line commissioning.
9. Loopback Functions: Offers three loopback functions: E1 Local Loopback (ANA), Ethernet interface loopback to far-end (DIG), and command remote Ethernet interface loopback to local end (REM).
10. Power & Safety: Offers multiple power supply options and supports dual power backup modes such as AC+DC, AC+AC, and DC+DC; telephone interfaces include built-in high-standard lightning protection, meeting the GB/T17626.5 (6KV) standard.
◆ E1 Interface
| Standard Compliance | Compliant with G.703 Recommendation |
| Rate | 2048 Kb ± 50 ppm |
| Code Type | HDB3 |
| Impedance | Unbalanced 75 Ω/ Balanced 120 Ω (Unbalanced interface requires coaxial adapter for 75-2/3 coaxial cable) |
| Jitter Characteristics | Meets G.742, G.823 Recommendations |
| Input Attenuation | 0 dBm ～ 6dBm |
◆ FXS Subscriber Interface
| Ringing Voltage | 75 V |
| Ringing Frequency | 25 Hz |
| 2-Wire Input Impedance | 600Ω (Off-hook) |
| Return Loss | 20 dB |
◆ FXO Trunk Interface
| Ringing Detection Voltage | 35 V |
| Ringing Detection Frequency | 17 Hz - 60 Hz |
| 2-Wire Input Impedance | 600Ω (Off-hook) |
| Return Loss | ≥20 dB |
◆ E&M 2/4 Wire Audio Interface
| E&M Type | TYPE V |
| E-Wire Max Current | 22 mA; Saturation Voltage: 3 V |
| M-Wire Constant Current | 7 mA; Min Detection Current: 5 mA |
| A/D Gain | 0 dB |
| D/A Gain | 0 dB |
| 2/4 Wire Input Impedance | 600Ω |
◆ Magneto Telephone Interface
| Ringing Detection Voltage | 75 V |
| Ringing Detection Frequency | 25 Hz |
| 2-Wire Input Impedance | 600Ω (Off-hook) |
| Return Loss | 20 dB |
◆ Electrical and Mechanical Characteristics
| System Power | AC 180 V∼260 V; DC −48 V; DC +24 V |
| Power Consumption | ≤10 W |
| Dimensions/Form Factor | 485(L)×200(W)×45(H) mm
(1U 19-inch Rack-mount) |
◆ Environmental Index
| Operating Temperature | −10∘C∼+60∘C |
| Storage Temperature | −40∘C∼+85∘C |
| Operating Humidity | 0%∼95% (Non-condensing) |
| MTBF (Mean Time Between Failures) | >100,000 hours |
