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Other operator services 65
11 • Other operator
services
Most items of the Operator Services menu (e.g. Service
numbers, Services +) are subscription-dependent and
specific to operators: your mobile phone readily sup-
ports them if they are included in your subscription.
Consequently, the menus shown opposite may or may
not be available. Contact your network operator for
detailed information on availability and rates.
The services provided may involve making a phone call
or sending a SMS for which you may be charged
The phone supports standard GSM strings that can be
sent from the keypad to the network and used to acti-
vate services provided by the network.
•Example n° 1
Press
*
4
3
#
, then
(
, to activate the
Call Waiting service.
•Example n° 2
Press
*
#
3
1
#
, then
(
, to know if
the mobile identification has been sent.
•Example n° 3
Press
*
6
1
#
, then
(
, to activate the fea-
ture call forward if no reply.
•Example n° 4
Press
*
6
2
#
, then
(
, to activate the fea-
ture call forward if unreachable.
Contact your network operator for detailed informa-
tion on GSM strings.
Some phone services (such as phone answering ma-
chines and pagers) require your phone to transmit
DTMF tones (Dual Tone MultiFrequency), also
known as “touch tones”. These are used to communi-
cate passwords, callback numbers, caller choices, and
so on.
You can send DTMF tones at any time during a call by
pressing any of the keys
0
to
9
,
*
and
#
.
You can also attach a DTMF sequence to a phone
number before dialling it (or storing it in the
Phone-
book
). The phone number and the DTMF part must
be separated by a wait character.
GSM strings
Query a voice server, voice mailbox,
messaging service, etc. (DTMF tones)
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