E1 Interface (Main Link)
 

Number of Interfaces	2
Conformity (Electrical)	G.703
Frame Structure	As per ITU (CCITT) G.704
Signaling	Channel Associated Signaling
PCM Sampling Rate	8000 Samples / sec
Encoding Law	A Law as per ITU (CCITT)
Bit Rate	2048 Kbps ± 50 ppm
Code	HDB3
Nominal Impedance	120 W balanced / 75 W unbalanced (75 W option)
Peak Voltage of a mark For 120 W Balanced interface 75 W Unbalanced interface	3.0 V ± 0.3 V 2.37 V ± 0.237 V
Peak Voltage of a space for 120 W Balanced interface 75 W Unbalanced interface	0V ± 0.237 V 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 multiframe alignment	As per clause 5.2 of ITU (CCITT) G.732

2 Wire / 4 Wire - Voice Frequency Interface(s)

Number of Channels per Card	2
Interface Type	FXO, FXS, 2W / 4W E&M
Maximum Number of Channels	30
Transmission performance	Fully Compliant to ITU (CCITT) G.712 specification
Line Impedance	600 W (900 W optional)
Voice Channel Frequency	300Hz-3400Hz
Insertion Loss	-2.0dB Nominal (User adjustable)
Idle Channel Noise	£-65dB
Return Loss	300Hz - 600Hz - ³12dB 600Hz - 3400Hz - ³15dB
Longitudinal Balance	³ 46dB between 300Hz to 3400Hz
Ring Frequency	25 Hz (20Hz, Optional)
Ring Voltage	³ 75 volts RMS into a load of 5 R.E.N. with a 0.30 Erlang traffic pattern
Subscriber Loop Current	³ 23mA into a subscriber loop of 1000 ohms
Overload Level	+3.14dBm ± 0.5dBm
Battery Reversal	All channels
Dial Pulse Speed	8 -12 pps - Pulse Dialing / DTMF Dialing

Low Speed Data Interface RS232

Interface	RS232
Number of Interfaces per Card	2
Maximum Number	30
Conformity	RS232
Mode	Asynchronous
Bit Rate	50 bps to 19.2 Kbps
User Interface	DCE
Character Length	5 / 6 / 7 / 8 (Auto-Select)
Stop Bits	1 / 1.5 / 2 (Auto-Select)
Parity	Even / Odd / 0’s / 1’s / none (Auto-Select)

G.703 @ 64kbps, Synchronous Data Interface

Interface	G.703@ 64 Kbps
Number of Interfaces per Card	2
Maximum Number	30, V.35, 64Kbits / sec. Interface
Conformity	To (CCITT) Rec. G.703
Mode	Synchronous, Co-directional
Bit Rate	64Kbps

Sub-Rate Multiplexer:- Optional Extra

Number of Interfaces per 64 Kbps channel	6
Interface	RS232
Mode	Asynchronous
Bit Rate	9.6Kbps, 8 bits 1 stop bit
Parity	None

BRI ISDN 2B+D

"U" Interface	Meets ANSI T1.601-1992 requirements
Line Rate	160 Kbits/s
Frame Format	2B+D as per CCITT Rec. 1.430
Line Code	2B1Q as per CCITT Rec.G.961
Accepted Line Attenuation	42dB at 40 Khz
Pulse Shape	As per CCITT Rec.G.961
Multiplexer Emulation	LT Emulation / NT Emulation (User Selectable)
Impedance	135 Ohms at 40KHz

iDSL - ISDN DSL Specifications

"U" Interface	Meets ANSI T1.601-1992 requirements
Line Rate	160 Kbits/s
Frame Format	2B as per CCITT Rec.1.430
Line Code	2B1Q as per CCITT Rec.G.961
Accepted Line Attenuation	42dB at 40 Khz
Pulse Shape	As per CCITT Rec.G.961
Multiplexer Emulation	LT Emulation
Customer Premises Equipment	NT Emulation
Impedance	135 Ohms at 40KHz

Maximum Distance : 5KM (4 miles) on 0.5 mm twisted Pan. Distance may vary with cable gauge
For distance using various cable guages please refer to chart below.

Distance in Kms. (Miles)
Data Rate (Kbps)	Wire Gauge (AWG/mm)
	19 (.9mm)	22 (.6mm)	24 (.5mm)	26 (.4mm)
128 / 144	17.4 (10.8)	11.6 (7.2)	8.1 (5.0)	5.5 (3.4)

High Speed Synchronous "n X 64" Data Interface Type: V.35

Interface	V.35
Number of Interfaces per Card	1, ("N" X 64 Kbits / sec. per Card)
Maximum Number	("N" X 64 Kbits / sec. Interface maximum value of "N"=30) - User Selectable
Conformity	V.35
Mode	Synchronous
Bit Rate	64Kbps to 1984 Kbps
User Interface	DCE

High Speed Synchronous "n X 64" Data Interface Type: V.36

Interface	V.36
Number of Interfaces per Card	1, ("N" X 64 Kbits / sec. per Card)
Bandwidth	("N" X 64 Kbits / sec. Interface maximum value of "N"=30) - User Selectable
Conformity	V.36
Mode	Synchronous
Bit Rate	64Kbps to 1984 Kbps
User Interface	DCE

High Speed Synchronous "n X 64" Data Interface Type: X.21

Interface	X.21
Number of Interfaces per Card	1, ("N" X 64 Kbits / sec. per Card)
Bandwidth	("N" X 64 Kbits / sec. Interface maximum value of "N"=30) - User Selectable
Conformity	X.21
Mode	Synchronous
Bit Rate	64Kbps to 1984 Kbps
User Interface	DCE

High Speed Synchronous "n X 64" Data Interface Type: RS530

Interface	RS530
Number of Interfaces per Card	1, ("N" X 64 Kbits / sec. per Card)
Bandwidth	("N" X 64 Kbits / sec. Interface maximum value of "N"=30) - User Selectable
Conformity	RS530
Mode	Synchronous
Bit Rate	64Kbps to 1984 Kbps
User Interface	DCE

High Speed Synchronous "n X 64" Data Interface Type: 10BaseT Ethernet Bridge

Interface	10BaseT (Bridge)
Number of Interfaces per Card	1, ("N" X 64 Kbits / sec. per Card)
Bandwidth	("N" X 64 Kbits / sec. Interface maximum value of "N"=30) - User Selectable
Conformity	10BaseT Ethernet Bridge
Mode	Synchronous
Bit Rate	64Kbps to 1984 Kbps
User Interface	DCE

High Speed Synchronous "n X 64" Data Interface Type: 10BaseT Ethernet Router

Interface	10BaseT (Router)
Number of Interfaces per Card	1, ("N" X 64 Kbits / sec. per Card)
Bandwidth	("N" X 64 Kbits / sec. Interface maximum value of "N"=30) - User Selectable
IP routing	RIP-I, RIP-II, static routing, IP filters, BootP client and relay, DHCP relay
IPQoS	Bandwidth management (CBR, VBR), Priortization (6 levels), RTP auto detection, DiffServ/TOS support
Bandwidth Optimization	SW Compression (optional), MLPPP and Bandwidth on Demand, Connection on Demand and IPX spoofing
Interoperability	PPP
Supported RFCs	1058, 1213, 1315, 1332, 1334, 1389, 1471, 1472, 1473,1474, 1490, 1493, 1519, 1542,1573, 1604, 1631, 1638, 1661, 1662, 1722, 1723, 1724, 1812, 1850, 1962, 1974, 1990

High Speed Synchronous "n X 64" Data Interface Type: G.SHDSL

Interface	G.SHDSL
Number of Interfaces per Card	1, ("N" X 64 Kbits / sec. per Card)
Bandwidth	("N" X 64 Kbits / sec. Interface maximum value of "N"=30) - User Selectable
Compliance	ITU G.SHDSL (ITU-T / G.991.2) ETSI SDSL (ETSI TS 101 524)
Handshake	ITU G.hs (ITU-T G.994.1)
Mode	Synchronous
Bit Rate	64Kbps to 1984 Kbps (User Selectable)
User Interface	LTU

Protection

Central Office Terminal and Remote Terminal are protected against power surges and transients occurring from lightning and electric induction as per CCITT Rec. Table I/K-20 towards line side.

Clock

Timing Options	Internal Clock, Loop Timed Clock
Synchronization Sources	Internal Clock, External Clock, timing derive from incoming HDB3 links (Loop Timed)
Default Option	Internal Clock

Management Interface

Local Management Interface
RS232, operating @ 9.6 Kbps CLI (text) based Interface, Hyper Terminal (VT-100 Emulation).

In-band Management Interface for Remote Terminals
RS232, operating @ 9.6 Kbps CLI (text) based Interface, Hyper Terminal (VT-100 Emulation).

Out-of-Band Management Interface - Optional
10 / 100 BaseT - User Assigned IP Address

Eenvironmental

Temperature and Humidity	0°C to + 50°C, 90% R.H. (Non Condensing)
Altitude	upto 9,000 feet

Power Supply

Input DC voltage	-48V DC ( nominal )
Range of input	-40V to -60V DC
Output voltages	+5V, -5V, filtered -48V ( for term. cards)
Full Load Output Current	8A at +5V, 0.5A at -5V
Input Voltage Reversal Protection	Provided in the Card
Over Current Protection	10A for +5V, 0.5A for -5V
Short Circuit Protection	Current limit - 6A. Recovers on removal of short
Efficiency at full load	>86%
Ripple at full load	<5mVrms
Spike at full load	<50mV
Power Consumption	21W - with all 30 Voice Circuits 50W (Worst - Case) - all data circuits.