8 Channel PCM Voice Telephone over Fiber Optic up 20Km with Ethernet SC

Description

New Arrival , Super High Quality,Ultimate Performance
8 Channels PCM Voice Telephone over Singlemode Fiber Optic up to 20Km,
with 10/100Mbps Ethernet
Features:
High quality PCM voice telephone Modular design, stable and reliable performance
Support Protocol: IEEE 802.3, IEEE 802. 1Q (VLAN)
Transmission bandwidth: 10-100Mbps (per network port) full duplex, half duplex fully adaptive
Adopt traditional PSTN normal voice, each voice occupies a 64K channel, support caller ID and fax.
Compact design, beautiful appearance and convenient installation and operation.
Complete status display function for easy maintenance and management.
Single-mode and multi-mode adaptive, simplex SC interface
Working distance : singlemode fiber 0~20Km, and compatible with Multimode fiber 0~300meters.
Phone RJ11 port specifications:
Voice coding: PCM coding, 64Kbps per voice
Crosstalk attenuation: ≥65dB
Balanced noise: ≤63.7dBmop
Insertion loss: -3 ± 0.75dB
Frequency characteristics: 300 to 3400 Hz (-0.6 to +3 dB)
Relay port (FXO): connected to the switch
Two-wire AC input impedance: 200+680//0.1 Ω (three components)
Ringing voltage: 35 ~ 150V
Ringing frequency: 17~60HZ
Return loss: 20 db
User Interface (FXS): Connect to the user's telephone
Two-wire AC input impedance: 200+680//0.1 Ω (three components)
User line loop resistance: less than 1KΩ (including phone)
Ringing voltage peak-to-peak value: 110~150V
Ringing frequency: 22~28HZ
Feed voltage: 28V
Feed current: 20~50mA;
Return loss: 20 db
Bell flow: AC90 plus or minus 15V
Ethernet RJ45 port specifications:
Rate: 10M/100M, full duplex, half duplex fully adaptive
Actual transmission bandwidth: 50Mbps per network port
Protocol: Support IEEE 802.3, IEEE 802.1Q (VLAN)
Physical interface: RJ45, support AUTO-MDIX (cross line straight line adaptive)
Power supply:
Suitable working voltage AC100~240V, DC5V/2A.
US/EU/UK/AU power supply adaptor is available.
Applicable environment:
Major communication operators, governments, enterprises and institutions.
Package include:
1x 8CH PCM telephone Transmitter
1x 8CH PCM telephone Receiver
2xpower supply (default US, EU/UK/AU available)
Manual
Shipping :
We Ship to Worldwide, the items will be shipped within 1~2 business day after your full payment !
Payment :
Paypal.
Return Policy:
1. Refunds are only offered for defective products reported within 7 days upon receipt.
2. All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return, and your po#.
3. We will replace your item if it is found to be defective within 14 days.
4. Buyer required paying for his own postage fees to return the item to us. Shipping and handling fees are non-refundable at any case.
5. Please contact us first by email before returning your item, because some solutions may not require returning your item.Returned item must be in new condition with all the accessories.
6. All warranties do not cover the damage due to misuse or compatibility.
8. We do our best to serve each and every customer the best we can.
Warranty and Guarantee:
1.Two years Warranty, Buy with confidence!
2.If you find any defect for item in 3 months, we will send you a replacement without additional cost, or make refund after we receive the defective item.
4. If item is defective after 3 months, we can still accept that you send it back to us. A new one will be sent to you after we received the defective item, but you have to pay the extra shipping fee.
Other Policies:
1. We are not responsible for any custom duty or import tax.
2. After receiving the payment for item, we will leave POSITIVE FEEDBACK. If the item is not satisfactory to you when you received, please feel free to contact us.
3. All emails will be responded within 1 business day. If you do not receive our reply, we will reply to you upon receipt of your re-sent email as soon as possible.
4. Serious Buyer Only! Please place bid only if you agree with all the terms.