Technical Specifications: E1 GSM Gateway / E1 GSM Channel Bank

E1 Interface Card | Power Supply Card
GSM Access Card | Echo Canceller Card

E1 Interface Card

Number of E1 Interface	One
Conformity	G.703
Frame Structure	As per ITU-T (CCITT) G.704
Signaling	Channel Associated Signaling (R2 Generic) in accordance with ITU-T Q.421, and ITU-T Q.422 Complies to both ITU-T Q.421, and ITU-T Q.422.
PCM Sampling Rate	8000 samples / second.
Encoding Law	A Law
Bit Rate	2048Kbps 50ppm.
Code	HDB3
Nominal Impedance	120 Ohms Standard (75 Ohms Optional)
Connector	RJ45 (120 Ohms Impedance)
Peak Voltage of a mark For 120 Ohms Balanced Interface	3.0 Volt 0.3 Volt.
Pulse Mask	As per ITU-T (CCITT) Rec. G.703
Output Jitter	<0.05UI (in the frequency range of 20Hz to 100KHz).
Permissible Attenuation	6dB at 1MHz
Return Loss at: 51.2 KHz to 102.4 KHz. 102.4 KHz to 2048 KHz 2048 KHz to 3072 KHz	> 12dB > 18dB > 14dB
Jitter Tolerance	As per ITU-T (CCITT) G.823
Loss and Recovery of Frame Alignment	As per Clause 3 of ITU-T (CCITT) G.732
Loss and Recovery of Multi-Frame Alignment	As per Clause 5.2 of ITU-T (CCITT) G.732

Power Supply Card

Input DC voltage	-48V DC ( nominal )
Range of input	-40V to -60V DC
Output voltages	+5V
Full Load Output Current	18A@5VDC
Input Voltage Reversal Protection	Provided in the Card
Over Current Protection	20A for +5V
Short Circuit Protection	Current limit - 20A. Recovers on removal of short
Under Voltage	< 4.5V
Over Voltage	5.4V to 5.6V
Efficiency at full load	>80%
Ripple at full load	<5mVrms
Spike at full load	<50mV
Power Consumption	120 Watts (Worst Case)

GSM Access Card

Number of GSM Interfaces	1 ~ 30 (Stackable, 1 thru 30).
Type	1. Dual Band EGSM 900 MHz and EGSM 1800MHz. 2. Dual Band EGSM 900 MHz and EGSM 1900 MHz.(Optional)
Compliance	Compliant with ETSI GSM Phase 2+ standard (Normal MS) Class 4 (2W @ 900MHz) Class 1 (1W @ 1800/1900 MHz)
Approvals	Fully Type Approved to GSM Standards
SIM Interface Internal Tray	Toolkit Class 2. 3V Reader
Voice Features	Full Rate, Enhanced Full Rate And Half-Rate (FR/EFR/HR)
DTMF	Dual Tone Multi FrequencyFunction (DTMF) Dialing Support

Alarms

An alarm shall be displayed in LED L1 / L2 for the following reasons

Invalid SIM Card
Unregistered SIM Card
Faulty SIM Card
Faulty GSM Module
GSM Access Card Out of Range

Echo Canceller Card

Provides voice echo cancellation of up to 64ms / 128ms
Conforms to ITU-T G.165 and ITU-T G.168
G.164 /G.165 disable tone detection
Non-Linear Processor with Comfort Noise Insertion
Narrow-Band Detector
Eliminates long echo tail.

E1 Echo Canceller Card - E1 Interface (Optional)

Number of Interfaces	2, 1 - Input (RJ-45) 1 - Output (RJ-45)
Conformity	G.703
Frame Structure	As per ITU (CCITT) G.704
Signaling	Pass-Through
PCM Sampling Rate	8000 Samples / sec
Encoding Law	A Law as per ITU (CCITT) G.711
Bit Rate	2048 Kbps ± 50 ppm
Code	HDB3
Nominal Impedance	120 W balanced
Peak Voltage of a mark For 120 W balanced interface	3.0 V ± 0.3 V
Peak Voltage of a space For 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 multiframe alignment	As per clause 5.2 of ITU (CCITT) G.732

Mechanical Specifications

Rack Mounting	Standard 19-Inch DIN Rack
Height	6U (265 mm)
Depth	290 mm
Width	19-inch (477mm)
Weight	15Kgs. (Net)

Related Links:

Aries Telecom
10842, N 127th Place
Scottsdale, AZ 85259, U.S.A.
Phone: 1-480-816-8672 Fax: 1-480-451-6693
E-mail: info@ariestelecom.com
Website: http://www.ariestelecom.com

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