New generation multi-service pcm multiplexer(via IP,E1,fiber)

PCM-MS08 has 10 slots in the real panel:

• 2 power supply card slot( optional: AC,DC or AC+AC,AC+DC,DC+DC) 
• 2 control card slots（optional CP-1 or CP-4） 
• 6 service card slots: (optional FXS/FXO,E&M ,RS232,RS422,RS485,E&M etc）
• 
  

Control card

Interface type: Ethernet interface (FE1, FE2, FE3)

* Any Ethernet interface can be configured with one of the above operating modes

Network standards: IEEE 802.3u, 802.3x, 802.1p and 802.1Q
VLAN: 1) Based on IEEE 802.1Q
2) based on the Ethernet port
VLAN tag: maximum support 64
Port speed limit: 0 (factory default, no speed limit),
               8k, 256k, 512k, 1M, 2M, 8M
Jitter absorption: 2.5ms ~ 200ms
Connector: RJ-45

Interface Type: Node Clock Interface 
Number of interfaces: 1
Rate: 2.048 Mbps
Type: ITU-T Rec. G.703, HDB3 coding
Connector: RJ-45

Interface Type: Serial Control Interface (RS-232 / V.24 DCE)
Number of interfaces: 1
Interface rate: 9.6kbps asynchronous
Connector: MINI-USB

8E1/FE interface card

Interface type: E1
Number of interfaces: 8 channels
Baud rate: 2.048 Mbps
Interface impedance: 
1) 75Ω / unbalanced
2) 120Ω / balance
Line code: HDB3
Standard: ITU-T Rec. G.703, G704, G.732 (including CRC-4 and E bit)

Frame structure:

 1) G.704 Base frame structure (G732N) with / without CRC-4, conforming to ITU-T Rec. G.704 

2) 16-timeslot multiframe structure (G732S) with / without CRC-4, conforming to ITU-T Rec. G.704

3) non-frame structure (unframed mode)
Transmit level: 1) Balance: ± 3V (± 10%)
2) Unbalanced: ± 2.37V (± 10%)
Received level: 0 ~ -6dBm
Jitter performance: in line with ITU-T Rec. G.823
Surge protection: Complies with ITU-T Rec. K.21
Connector: DB44 (female), 1 out of 8 E1 cable (optional)

Interface type: Ethernet interface (FE1, FE2, FE3)
Number of interfaces: 3
Interface type: 10 / 100BaseT Ethernet (10M / 100M adaptive and parallel / crossover cable adaptive)
Duplex mode: half duplex / full duplex
Operating mode:
1) uplink interface
2) Downlink interface
3) network management interface
* Any Ethernet interface can be configured with one of the above operating modes
Network standards: IEEE 802.3u, 802.3x, 802.1p and 802.1Q
VLAN: 1) Based on IEEE 802.1Q
2) based on the Ethernet port
VLAN tag: maximum support 64
Port speed limit: 0 (factory default, no speed limit),  8k, 256k, 512k, 1M, 2M, 8M
Jitter absorption: 2.5ms ~ 200ms
Connector: RJ-45

RS232 interface card

Interface type: RS232 / V.24_DCE (not supported DTE presently)
Number of interfaces: 6 channels
Uplink bandwidth: 1 ~ 3 64k time slot
Multiplexing: Compatible with X.50
Operating mode: synchronous or asynchronous (software settings)
Working speed: 2.4kbps / 4.8kbps / 9.6kbps / 19.2kbps (software settings)

Voice service card

The voice interface card can be plugged into any service card slot, with a DB37 connector; can connect with 1 to 16 channel analog telephone signals, realized analog telephone signal end-to-end communication. 

Voice card can choose loop relay interface / FXO, analog user line interface / FXS, magnet phone interface, hotline telephone interface, support different types of interface mix.

Interface type: FXO / FXS / magnet / hotline
Number of ports: 16 channels
Uplink bandwidth: 1 ~ 16 64k time slot
Impedance: 200Ω + 680Ω || 0.1μF
Insertion loss: -3 ± 0.75dB
Frequency characteristics: 300 ~ 3400Hz (-0.6 ~ +3 dB)
Weighted noise: ≤-63.7dBmop
Crosstalk attenuation: ≤-65dB
Ring resistance: ≤-1800Ω
Connector: 1 x DB37 (female), 1 out of 16 audio cable (optional)

Application

The PCM-MS08 is designed to provide multi-service access and transport services for edge users, It can handle Ethernet, data, voice services and various network technologies in a single compact managed node. Through IP line, E1 line, STM- 1/4 line or self-built fiber cable, to achieve communication transmission function.

When choose IP transmission, all the service signals can be connected to the PCM-MS08 for unified scheduling, and the important service priorities can be set to ensure that each service signal has stable bandwidth, which does not affect each other and ensures the stable and reliable transmission for important services.

Some product in the market, through the IP transmission, cannot avoid the Ethernet transmission delay, jitter and packet loss problems, making the user hear the voice will appear incoherent, delay or even interrupt phenomenon, can not make sure the quality guarantee for the service which similar to VHF voice communication. PCM-MS08 optimized for the above problems, IP link interface support the transmission delay optimization, jitter buffer absorption, anti-packet loss and other functions to improve the stability of transmission and reliability, to solve the VHF voice communication incoherent, delay or even interrupted problem.

PCM-MS08 can provide standard STM-1 / STM-4 link interface, SDH equipment as SDH self-healing ring, you can also access the operator STM-1 / STM-4 line, to achieve a wide range of business transmission.

PCM-MS08 can choose dual-link automatic protection switch, access to the user to provide two-channel transmission link, when the main link failure automatically switch to the backup link transmission, to protect the important business reliability transmission.

2.2.1IP-based transmission of integrated business data

Note: PCM-MS08 can rent the operator’s IP line, using router or switch, to realize IP network interconnected of across Ethernet segments, or via wireless bridge to realize IP network interconnected.

Currently on the market, part of the transmission routing (such as: wireless bridge), the transmission bandwidth change with the Ethernet packet length or the introduction

Larger package delay jitter. When the PCM-MS08 is used in conjunction with a different wireless bridge, it may be necessary to adjust the jitter to collect the buffer size parameter to get the best transfer effect.

2.2.2based on SDH self-healing transmission integrated business data

2.2.31 line IP and 1 line E1, dual line for automatic switch for protection