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Using Your Phone 65
Bearer Mode
This can be set according to whether you are using a GPRS
network system or a regular GSM dialup network. If you are
using a GPRS network, you can use both the GPRS and dialup
network to send and receive SMS messages. If you are using a
dialup network, you are restricted to using only the dialup
network for sending and receiving SMS messages.
You need to ask the network operator whether your network
supports sending SMS over GPRS.
• GPRS
Use only the GPRS network to send and receive SMS
messages.
• GPRS/CSD
Use the GPRS network preferentially. Only if there is no
GPRS network present will the dialup network be used.
• CSD
Use only the dialup network to send and receive SMS
messages.
• CSD/GPRS
Use the dialup network preferentially. Only if there is no
GPRS network will the GPRS network be used.
Expiry
This sets the duration that an undeliverable SMS message that
you send can be stored at the message center. During this
period, the message center will continue to attempt to deliver
the message to the designated number.
Each operator has its own maximum expiry time setting.