Raisecom Technology Co., Ltd 1. Cautions Please read the following notices carefully before installing and using the device, Raisecom does not respond to any loss that caused by violating safety notice. RCMS2304-240 provides two types of power supply: AC and DC.
It can be applied to either public networks or various private networks. The transmission capacity of RCMS2304-240 is optional. The basic capacity 4 E1 links and 4 Fast Ethernet ports, and the maximum capacity is 8 E1 channels. RCMS2304-240 can be remotely managed.
Page 6
4 E1 links 4 ports Ethernet Standalone, single strand fiber, 1310nm Switch on layer 2 Multi-service device Company codename (Raisecom) Note: Standalone single strand fiber Ethernet multiplexer: RCMS2304-240 should work with RCMS2504-240, viz. one RCMS2304-240 should connect with one RCMS2504-240.
Raisecom Technology Co., Ltd 4. How to use 4.1. Introduction of front panel Sketch of RCMS2304-240 front panel 4.1.1. Power indicator Power indicator (Green): On when the power supply is working in good condition 4.1.2. Alarm indicator GL: general alarm GL general alarm indicator (red): Any of alarm happened make GL general alarm indicator “on”.
Raisecom Technology Co., Ltd 4.1.3. Button MASK / UNMASK: “ON”: Mask unused E1 link alarm; “OFF”: Not mask unused E1' s alarm RING / MUTE: Press on: enable the alarm ring. If alarm appears, there will be “zi…zi…” ring. Press off: disable the alarm ring.
Page 11
Raisecom Technology Co., Ltd must be all off (no loop-back). bit: DIP-switch for FPT When FPT is disabled, it is identical to the AIS function of traditional optical multiplexers. When the receiving signals of the E1 interface at the remote site are lost, the corresponding local E1 interface will output all “1”...
Page 12
Raisecom Technology Co., Ltd of remote site. “Isolated on local site” means users of local site isolate each other; but can communicate with remote site. “Isolated oppositely on two sides” means 1 port local site can communicate with 1 port of remote site.
RS232 and RS485. • LINK UP port: RJ45 connector. It adopts RS485 or RS232 (19.2kbps) standard. 4.2. Introduction of back panel Figure: Sketch of RCMS2304-240 of back panel 4.2.1. Optical interface Single strand, SC/PC connector 4.2.2. E1 interface A DB37 male connector on the back panel provides 1~4 E1 tributary ports.
Raisecom Technology Co., Ltd 4.3.1. S1---S4 introduction There are 4 DIP-switches on the bottom. The dip-switch can be set using small sharp pen or tools. Each set of dip-switch is in correspondence with E1 port. 1 2 3 4 Definition as following: 75Ω...
Raisecom Technology Co., Ltd 5. Installation and test 5.1. Inspect after Opening Please first check if the models and part numbers are in consistence, and also check if the equipments are damaged. 5.2. Preparation before Installation Carefully read this manual Prepare all kinds of the cable.
Raisecom Technology Co., Ltd 5.3.2. Electrify If power supply (PS) is DC –48V, first connect middle end to PGND. Turn off PS, connect “-48V” end with the lower electric level cable, “0V” end with higher electric level cable. Make sure no reverse connection, or no short circuited, and then turn on power.
Raisecom Technology Co., Ltd 6. Troubleshooting If you have any problems during installation and using, try to solve them by the following proposals. If there is no solution, please contact with distributors for technical support. These following explanations and solutions of alarm for optical port and LOS alarm for E1 tributaries are analyses of local alarm.
Page 19
Raisecom Technology Co., Ltd LOS red indicator of E1 channel is on Answer: Loss alarm of RX signal at E1 channel, there is no HDB3 signal received. Check if it connects well at E1 port; if the connection of 75 Ω cable reverse and if the string of 75 Ω...
Raisecom Technology Co., Ltd 7. Appendix A Introduction of Cable Making A.1 E1 interface 75ohm adopting DB37 coax adapter: Suggest using SYV 75-2-2 coax cable, the distance less than 200 meter. 120ohm DB37 male connector is defined as following: DB37 pin...
Page 22
Raisecom Technology Co., Ltd @2005 Raisecom Technology Co., Ltd. All trademarks are the property of their respective owners. Technical information may be subject to change without prior notification.