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Gigabit Ethernet and 64E1 to optical fiber multiplexer (RP104)

The RP104 is optical transmission equipment based on Application Specific Integrated Circuit (ASIC),realizes the 64 E1 and four 1000Mbps Ethernet data channel transmission over optical line of 1.25Gb/s, the four 1000Mbps Ethernet data channel share 1000M bandwidth. In point-to-point mode, the Ethernet transmission bandwidth can be doubled to 2G by setting the port-trunking function.

Product Description


The RP104 is optical transmission equipment leveraging Application Specific Integrated Circuit (ASIC) technology. It facilitates the transmission of 64 E1 and four 1000Mbps Ethernet data channels over an optical line at a speed of 1.25Gb/s, with the four 1000Mbps Ethernet data channels sharing a 1000M bandwidth. In a point-to-point configuration, the Ethernet transmission bandwidth can be doubled to 2G by enabling the port-trunking function.

This equipment supports management through the Command Line Interface (CLI), allowing users to monitor and configure the device using a PC-integrated super terminal. Additionally, it is compatible with the Simple Network Management Protocol (SNMP).

Boasting low power consumption, high integration, and robust stability, the RP104 presents a cost-effective solution for applications demanding simultaneous gigabit Ethernet and E1 functionality. This includes sectors such as telecommunications, electric power, and finance.


The RP104 features a compact design, occupying 1U height in a 19'' rack, making it suitable for standard rack installations. Key capabilities include the multiplexing of 64E1 and four 1000M Ethernet channels over optical fiber.

Gigabit Ethernet and 64E1 to optical fiber multiplexer (RP104)

Here are the detailed specifications

Optical Interface:

Dual optical interfaces with SFP optical modules (LC interface), supporting hot-plugging.
Line bit rate of 1.25Gb/s, with optional transmission distances dependent on the SFP optical module.
Complies with SFP MSA (INF-8074i), ITU-T G.695, and FC-PI V2.0 standards.
Supports 1+1 optical protection and Automatic Protect Switch (APS) with a recovery time of less than 50ms.
Provides an optical loopback function for convenient troubleshooting.
Supports ALS function (Automatic Laser Shutdown).
Features Remote Power down Detect (RPD) function to distinguish failures due to remote power down or fiber breakage.
E1 Interface:

Offers 64 E1 interfaces compliant with G.703, with selectable balanced/unbalanced configurations.
Jitter tolerance, jitter transfer characteristic, and jitter generation comply with ITU-T G.823 and G.742 recommendations.
Supports local/remote loop-back function.
Supports device loop and E1 line loop controlled by the local side for convenient E1 line testing.
Embedded E1 Bit Error Rate Test (BERT) function.
Ethernet Interface:

One optical Gigabit Ethernet interface and three electrical Gigabit Ethernet interfaces compliant with IEEE802.3 standards.
Electrical gigabit Ethernet interfaces use RJ45 connectors, supporting auto-negotiation and working in various modes (1000M full-duplex, 100M full/half-duplex, 10M full/half-duplex).
Optical gigabit Ethernet interface uses a 1000M SFP module, working in 1000M full-duplex mode.
Proprietary technique to prevent Ethernet frames from looping back during unexpected optical loopback.
Supports unicast, multicast, and broadcast frames, along with flow control and broadcast storm filtering control.
Features a 4K MAC address table, MAC address dynamic learning function, port rate control function, port-based VLAN, IEEE 802.1Q tag-based VLAN, QinQ (Double Tag VLAN), port trunking/aggregating function, and QoS (Quality of Service).
Network Management Interface:

Supports Command Line Interface (CLI) based on RS232 (CONSOLE) and Ethernet (EMU) management interfaces (TELNET).
SNMP (Simple Network Management Protocol, V1 and V2C) support.
Enables device alarm and status monitoring, port loop configuration, and more.
Includes one RS232 user channel in point-to-point mode.
Provides comprehensive alarm indications and performance statistics.
Power Supply:

Supports hot-spare power, with power consumption less than 12W.
Power access options include -48V DC single power access, -48V DC double power access, 220V AC single power access, and 220V AC double power access.


RP104 supports point-to-point, point-to-dual point, ring and chain network application, refer to Figure 3-1, Figure 3-2, Figure 3-3 and Figure 3-4 shows:

In point-to-point topology, the Ethernet transmission bandwidth can be doubled to 2G by setting the port-trunking function.

Figure 2 Point-to-dual point application

In ring and chain topology, there can be several RP1000 equipment (Gigabit Ethernet and 16E1 optical fiber multiplexer with 4/8/16 E1,3 copper gigabit Ethernet interfaces and one fiber gigabit Ethernet interface), each RP1000 occupy 4/8/16 E1.

Note:The optical line can multiplex one path of GE signal and up to 80 E1s.

Figure 4 Chain network application

Note: The LA<->LB connection sequence is required for all elements in the Ring or Chain networks


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