User manual
Raisecom Technology Co., Ltd
2
2. Overview
RC953-8FE16E1 is an Inverse Multiplexing Ethernet Gateway that delivers Ethernet
services over existing TDM transportation network. It can be deployed in central site for
aggregating subscribers or in customer premises enabling Inverse Multiplexing for
enlarging much more bandwidth.
RC953-8FE16E1 provides 8 Ethernet ports and 16 E1 ports (both balanced and
unbalanced) for subscribers and functions as a bridge between IP-based network and
leased circuits.
Additionally its advanced features such as automatic E1 link adjustment,
Ethernet port trunking (Link Aggregation for redundant Ethernet Access) and redundant
power supply provide our carriers a cost-effective, flexible and reliable solution for
high-quality Ethernet Service delivery by using TDM network resources.
2.1. Main features
z Provide 16 E1 interfaces and the E1 working mode can be Single E1 Mode and
Inverse Multiplexing Mode;
z Provide 8 fast Ethernet interfaces, which support auto-negotiation, auto-MDI/MDIX,
10M/100M, half/full duplex and IEEE802.3x flow control;
z HDLC-over-E1 encapsulation
z In single E1 mode:
Support both framed and unframed E1 mode
Only one E1 link in each transmission channel
With RC952 in remote sites in hub-and-spoke topology
z In E1 Inverse Multiplexing mode:
Adopt frame-interleave multiplexing to realize the transportation of Ethernet over
multiple E1
With RC953-FE4E1/8E1 in remote sites in hub-and-spoke topology
E1 link sequence auto-sensing
The maximum relative latency of E1 line is +/-16ms
Automatically adjust the E1 link capacity of transmission channel if one or more
E1 link fails
Only support framed E1 (PCM31, FAS+CRC4 by default), CRC auto-negotiation
and is configurable
z Ethernet switching function:
4096 MAC address
Transparently forward BPDU, GMRP, GVRP and IGMP packets
Maximum Transmission Unit: 1536 bytes
Ethernet port trunking (Link Aggregation for redundant Ethernet Access)