Sony Ericsson GM47 - Manual (Page 161)

6. DATA - GPRS
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<APN> Description
String type (Access Point Name) a string parameter which is a logical
name that is used to select the GGSN or the external
packet data network. If the value is null or omitted, then
the subscription value will be requested
<PDP_address> Description
String type A string parameter that identifies the MS in the
address space applicable to the PDP. If the value is
null or omitted, then a value may be provided by
the TE during the PDP startup procedure or, failing
that, a dynamic address will be requested
<d_comp> Description
0 PDP data compression OFF
1 PDP data compression ON
2..255 Reserved
<h_comp> Description
0 PDP header compression OFF
1 PDP header compression ON
2..255 Reserved
<pdN> Description
String type Zero to N string parameters whose meanings are specific
to the <PDP_type>