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84 Operator services
14 • 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 following 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.
GSM strings
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
feature call forward if no reply.
•Example n° 4
Press
*
6
2
#
, then
(
, to activate the
feature call forward if unreachable.
Contact your network operator for detailed informa-
tion on GSM strings.
DTMF tones
Some phone services (such as phone answering ma-
chines and pagers) require your phone to transmit
DTMF tones (Dual Tone Multi Frequency), 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.
Pause and wait characters
To obtain a pause or wait character, press and hold
#
. The display shows
w
for a wait and
p
for a pause.
The phone always interprets the first pause character as
a wait character. When you dial a number containing
Other services