ZEN S30, Manual

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4
Call functions
4.1
Make a call
When the name of network service provider appeared on the idle
screen, the mobile is ready for call.
4.1.1
Make a domestic call
Enter the phone number including the area code (local calls
don‟t need the area code),then press talk key1 to make a call by
SIM1 or press talk key2 to make a call by SIM2.
4.1.2
Make an extension call
When making an extension call, click * key three times to get
“P” that is a prefix of extension numbers. It will dial
automatically in several seconds since you dialed the telephone
exchange.
viz.: area code—telephone exchange numbers—P—extension