What is the difference between the Nokia 31 and other Nokia GSM Connectivit

**Nokia_FAQ** · 2002-05-13, 22:27

What is the difference between the Nokia 31 and other Nokia GSM Connectivity Terminals?

**Nokia_FAQ** · 2002-05-13, 22:28

Nokia 30 is an EGSM 900/GSM 1800 frequency variant for Nokia 31. Nokia 20 GSM Connectivity Terminal is the first generation EGSM900/1800 Connectivity Terminal. The Nokia 31, the Nokia 30 and the Nokia 20 all communicate with customer application module via the M2M System Connector. 
The main differences between the Nokia GSM Connectivity Terminals: 
<table border=1>
<tr>
<td>&nbsp;</td>
<td>Nokia 30</td>
<td>Nokia 31</td>
<td>Nokia 20</td>
<tr>
<td>Frequency</td>
<td>EGSM 900/GSM 1800</td>
<td>GSM 850/1900</td>
<td>EGSM 900/GSM 1800</td>
<tr>
<td>Weight</td>
<td>65 g</td>
<td>65 g</td>
<td>182 g</td>
<tr>
<td>Size</td>
<td>116 cm</td>
<td>116 cm</td>
<td>441 cm</td>
<tr>
<td>Length</td>
<td>84 mm</td>
<td>84 mm</td>
<td>190 mm</td>
<tr>
<td>Width</td>
<td>53 mm</td>
<td>53 mm</td>
<td>80 mm</td>
<tr>
<td>Depth</td>
<td>26 mm</td>
<td>26 mm</td>
<td>29 mm</td>
<tr>
<td>Data bearers</td>
<td>GPRS, HSCSD, CSD, SMS, USSD</td>
<td>GPRS, CSD, SMS, USSD</td>
<td>HSCSD, CSD, SMS</td>
<tr>
<td>RS-232</td>
<td>(Adapter, AT)</td>
<td>(Adapter, AT)</td>
<td>AT & CORBA</td>
<tr>
<td>Antenna</td>
<td>Internal, Ext. antenna connector</td>
<td>Internal, Ext. antenna connector</td>
<td>External, Ext. antenna connector</td>
</table>

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