Raisecom RC905-EE1 User Manual - page 3
3
Chapter 1 RC905-EE1 REV.B Overview
Modification of Rev. B (for the users of RC905-EE1 (REV.A), if you are new user, please
ignore it):
1.
Please be informed for the old customers that we’ve altered the definition of the 1
st
,
2
nd
and 3
rd
bit of SW2 switch on the bottom.
2.
The duplex auto-negotiation capability is added at the Ethernet port to enable
connection with auto-negotiation port of switch.
3.
The MDI/MDIX capability is added at the Ethernet port, which makes engineers not
confused by wire order.
4.
The back pressure flow control in half duplex mode is added in the Ethernet port.
5.
The limitation of broadcast storm is also added.
Special Specification:
RC905-EE1(REV.B) can be interoperated with old version REV.A, but please be noticed thin
the definitions of 1
st
and 3
rd
bit of SW2 have changed. If there are any questions, please consult
our technical staff.
RC905-EE1 cannot interoperate with RC901-EE1 and RC902-EE1.
Main Features:
z
Provides one 10-BaseT Ethernet RJ45 port and one E1 (75 ohm BNC and 120 ohm RJ45)
port to perform transmission of Ethernet data in E1 Channel.
z
Provides both fractional E1 and Transparent E1 modes. The E1 bandwidth can be set in the
fractional E1 mode as N*64Kbps (N=1-32).
z
When working in the fractional E1 mode, it has the remote-site control function, can
control remote E1 loop-back, and can interrogate remote-site alarm information.
z
Supports maximum Ethernet frame length up to 1593 bytes.
z
Supports Full/Half-duplex auto-negotiation at the Ethernet port.
z
Supports IEEE802.3x flow control in full duplex mode at the Ethernet port.
z
Supports back pressure flow control in half duplex mode at the Ethernet port.