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SDH HUAWEI OptiX OSN 3500 Electrical Interfaces

1.PDH Electrical Interface

Interface Type 1544 
kbit/s
2048 
kbit/s
34368 
kbit/s
44736 
kbit/s
139264 
kbit/s
155520 
kbit/s
Code B8ZS, AMI HDB3 HDB3 B3ZS CMI CMI
Signal bit rate 
at the output 
interface
ITU-T G.703-compliant
Attenuation 
tolerance at the 
input interface
ITU-T G.823-compliant
Frequency 
deviation 
tolerance at the 
input interface
ITU-T G.703-compliant
Anti-interference 
capability of input 
interface
ITU-T 
G.824-
compliant
ITU-T G.823
-compliant
ITU-T 
G.824-
compliant
ITU-T 
G.823-
compliant
ITU-T 
G.825-
compliant

2. DDN Interface

Interface Type Description Standard
Framed E1 
interface type
Framed E1 signal Physical and electrical features comply with 
ITU-T G.703. The frame structure complies 
with ITU-T G.704.
N x 64 kbit/s 
interface
V.35 interface Complies with ITU-T V.35.
V.24 interface Complies with ITU-T V.24.
X.21 interface Complies with ITU-T X.21.
RS-449 interface Complies with EIA RS-449 (RS-423A, 
RS-422A).
RS-530 interface Complies with EIA RS-530.
RS-530A interface Complies with EIA RS-530A.

3. Auxiliary Interface
The OptiX OSN 3500 provides many auxiliary interfaces.
Table 1 Specifications of the 64 kbit/s interface

Item Specification
Bit rate 64 kbit/s
Timing signal From RX
Coding style ITU-T G.703
Outgoing pulse shape ITU-T G.703
Output interface characteristic ITU-T G.703
Incoming interface characteristic ITU-T G.703

Table 2 Specifications of the RS-232 interfaces ,The RS-232 interfaces are S1, S2, S3 and S4 interfaces on the AUX.

Item Specification
Bit rate 19.2 kbit/s to the maximum
Mode RS-232 Tx & Rx data only
Electrical level ±5 V to ±15 V

Table 3 Specifications of the RS-422 interfaces,The RS-422 interfaces are S1, S2, S3 and S4 interfaces on the AUX.

Item Specification
Bit rate 19.2 kbit/s to the maximum
Mode RS-422 Tx & Rx data only
Electrical level ±2.0 V

Table 4 Specifications of the orderwire phone interface

Item Specification
Speech channel interface
Impedance 600 ohms
Bandwidth 300 Hz to 3400 Hz
Operating current 18 mA
Input gain -4/0/0 dB
Output gain 0/-7/0 dB
Signaling DTMF compliant with ITU-T Q.23
Analog EOW extension
Impedance 600 ohms
Bandwidth 300 Hz to 3400 Hz
Tx level -3.5±1 dBr
Rx level -3.5±1 dBr

OSN 3500
HUAWEI Optix OSN 3500 Electrical Interfaces as below:
03039203 SSN2SPQ4 4xE4 & STM-1 electrical interface board
03050938 SSN2EMR0(1000BASE-SX,850-LC) 12-way 10M / 100M electrical port and 1 Gigabit optical port Ethernet ring processing board(1000BASE-SX,850-LC)
03050939 SSN2EMR0(1000BASE-LX,1310-LC) 12-way 10M / 100M electrical port and 1 Gigabit optical port Ethernet ring processing board(1000BASE-LX,1310-LC)
03050940 SSN2EMR0(1000BASE-ZX,1310-LC) 12-way 10M / 100M electrical port and 1 Gigabit optical port Ethernet ring processing board(1000BASE-ZX,1310-LC)
03050941 SSN2EMR0(1000BASE-ZX,1550-LC) 12-way 10M / 100M electrical port and 1 Gigabit optical port Ethernet ring processing board(1000BASE-ZX,1550-LC)
03027509 SSN1EU04 4xSTM-1 Electrical Interface Board
03026740 SSN1EU08 8xSTM-1 Electrical Interface Card
03026951 SSN1MU04 4xE4 & STM-1 Electrical Interface Board
03026734 SSN1D34S 6 Road 34M / 45M electrical interface conversion switch board
03027581 SSN1C34S 3xE3 / T3 electrical interface changeover board
03026727 SSN1D75S 32xE1 / T1 Electrical Interface Switch Outlet (75 Ohms)
03026728 SSN1D12S 32xE1 / T1 Electrical Interface Switch Outlet (120 ohm)
03027083 SSN1D12B 32xE1 / T1 electrical outlet board
03026756 SSN1TSB8 8-channel electrical interface protection switching board
03027527 SSN1TSB4 4-way electrical interface protection switching board
Hong Telecom Equipment Service Ltd provide all boards above.

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