龙8-long8(国际)唯一官方网站

l Integrated circuit based on independent intellectual property rights;

l The whole machine is designed for veneer;

l Can monitor the alarm status of the peer;

l E1 interface complies with G.703 recommendations, using fully digital clock recovery and smooth phase lock technology;

l Provide two expansion interfaces, which can expand 1~4 asynchronous data, such as RS232 / RS485 / RS422 / Manchester code, etc .; or 1~8 switches and 1~4 E1(Therefore, up to 8 E1 channels on this device), 1~4 voice, or two/four-wire audio;

l Ethernet interface 10M / 100M, full / half duplex fully adaptive, VLAN support;

l Each Ethernet port supports Auto-MDIX (cross / straight connection adaptation);

l 1-16 voice access, support for caller ID function;

l Support each site's mutual release number function;

l Voice port support FXO port and FXS port, FXO port and program-controlled switch docking, FXS port and the user's phone connected;

l Desktop equipment can support independent SNMP network management, and support optical network management level connected (optional);

l Can detect the loss of optical signals for the remote device off or fiber fails;

l Can monitor the local temperature and the local voltage;

l Can monitor the voltage and temperature of the remote device and set the temperature alarm threshold;

l A variety of power options: AC220V, DC-48V / DC24V, etc .;

l No relay transmission distance greater than 2 ~ 120 km.

Optical interface
Wavelength	single mode 1310nm / 1550nm multimode 850nm / 1310nm
Fiber	multimode, single mode
Transmit power	-9dBm / -5dBm
Transmission length	0-50 km / 120 km
Receiving sensitivity	better than-36dBm (bit error rate <10-11)
Optical code	Scramble NRZ code
Connector	SC / FC / ST
E1 interface
4 E1 interfaces are in line with G.703 recommendations
Rate	2048Kb / s ± 50ppm
Pattern	HDB3
Impedance	unbalanced 75W
Jitter characteristics	to meet the G.742, G.823 recommendations
Input port allows attenuation	0 ~ 6dBm
Physical Interface	BNC
Ethernet interface (10 / 100Base-T)
Bandwidth	line speed 100M
Rate	10 / 100M adaptive, full / half duplex adaptive
Protocol	Supports IEEE 802.3, IEEE 802.1Q (VLAN)
MAC Address Table	learn 4096 MAC addresses
Physical interface	RJ45 , support Auto-MDIX (cross / straight line adaptive)
FXS phone port
Ringing voltage	75V
Ringing frequency	25HZ
Second-line input impedance	600Ω (off-hook)
Return loss	40 dB
FXO Interface
Ringing detection voltage	35V
Ringing detection frequency	17HZ-60HZ
Second-line input impedance	600Ω (off-hook)
Return loss	40 dB

16-Channel Telephone  Multiplexer.doc