| Number
of E1 Interface |
One |
|
Number of GSM Channels = 30 |
|
Number of SIMs per each GSM Channel = 3 |
|
Total number of SIMs per E1 = 90 |
| 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 |
RJ-45
(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 |
| Number
of GSM Interfaces |
1 ~
90
(Stackable, 1 thru 90). |
| 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 Frequency Function (DTMF)
Dialing Support |
| 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 |
