PRI (Primary Rate Interface) ISDN Multiplexer provides an efficient and cost-effective platform to convert 30, dial-up, analog voice circuits to a digital E1, PRI ISDN interface, as per ITU-T Q.931 recommendations. PRI ISDN (Euro ISDN) Multiplexer may be used to connect fully digital Corporate LANs and ISP Equipment and Networks with E1, PRI ISDN interfaces to analog PSTN circuits, or analog equipment.

FXS - Q.931 FXS - FXS interface cards - connect to analog telephone sets.

Digital Interface 2048 Kbps
 

Number of E1 Interfaces	1
Conformity (Electrical)	G.703
Frame Structure	As per ITU-T (CCITT) G.704
Signaling	PRI ISDN (Euro ISDN) signaling as per ITU-T Rec. Q.921, Q.931
PCM Sampling Rate	8000 samples / sec.
Encoding Law	A law as per ITU (CCITT) G.823
Bit Rate	2048 Kbps ± 50 ppm
Code	HDB3
Nominal Impedance	120 W Balanced
Peak Voltage of a mark 120 W Balanced interface	3.0 V ± 0.3 V
Peak Voltage of a space 120 W Balanced interface	0 V ± 0.3 V
Nominal Pulse Width	244 ns
Pulse Mask	As per ITU (CCITT) Rec. G.703
Output Jitter	< 0.05 UI (in the frequency range of 20Hz to 100 KHz
Permissible Attenuation	6 dB at 1 MHz
Return Loss at: 51.2 KHz to 102.4 KHz 102.4 KHz to 2048KHz 2048KHz to 3072 KHz	>12dB >18dB >14dB
Jitter Tolerance	As per ITU (CCITT) G.823
Loss and recovery of frame alignment : As per clause 3 of ITU (CCITT) G.732
Loss and recovery of multi-frame alignment : As per clause 5.2 of ITU (CCITT) G.732

2 Wire, Analog Interface - FXS Interface
 

Number of Interfaces per card	2
Interfaces Type	FXS
Maximum Number of Channels	30
Transmission performance	Fully compliant to ITU (CCITT) G.712 specifications
Line Impedance	600 W
Connector	RJ11
Voice Channel Frequency	300Hz - 3400Hz
Insertion Loss	-2dB Nominal (User adjustable range -2dB to -7dB
Idle Channel Noise	£ -65dB
Return Loss	300Hz - 600Hz - ³ 12dB 600Hz - 3400Hz - ³ 15dB
Longitudinal Balance	³ 46dB between 300Hz to 3400Hz
Ring voltage (FXS)	³ 75 volts RMS into a load of 3 R.E.N.
Ring Frequency	20 Hz / 25 Hz (User Selectable)
Subscriber Loop Current (FXS)	³ 23 mA into a subscriber loop of 1000 Ohms
Dial Tone	400 Hz modulated by 25 Hz
Dial Tone Timeout	12 seconds
Dialing	DTMF
Overload Level	+3.14dBm ± 0.5dBm
Data Transmission	Supports V.34 modems, 33.6Kbps (download data transmission rate)
Caller ID	DTMF (provides Carrler ID to all DTMF based decoders)

Clock Synchronization
 

Synchronization Sources	Internal Clock or timing derived from the E1, HDB3 link (Loop-Timed)
External Clock Input	As per ITU (CCITT) Rec. G.703
Impedance of External Clock Input Port	120 W Balanced
Default Option	Internal Clock

Power Supply

Input DC voltage	-48V DC ( nominal )
Range of input	-40V to -60V DC
Input Voltage Reversal Protection	Provided

Environmental
 

Cooling	Natural, Convection cooling
Temperature	0°C to 50°C, Ambient

Power Consumption
 

Power Consumption         24 Watts (Full Load)

Mechanical Specifications

Rack Mounting	Standard 19 inch DIN rack
Height	3U (133.22 mm)
Depth	292 mm
Width	482 mm
Weight	8.50 Kgs.

Ordering Information