Section 12: GSM Operation
T
ieline
Page 95
T E C H N O L O G Y
When data is sent in transparent mode you require sustained data flow to
transfer data reliably. This is network dependent and if the network is
unreliable there may be some loss of data packets, more bit errors (1/1000)
and therefore dropouts in audio.
In non-transparent data mode, Radio Link Protocol (RTP) is used, providing
better error correction and less bit errors (1/100,000,000). Data is buffered
when it is being sent and received from a GSM module or cell-phone in this
mode. This mode is more reliable for a data call and
T
ieline
GSM modules
only support the sending of non-transparent data. We also recommend that
you use non-transparent data mode when you use a
Nokia
®
6310i cell-
phone.
If your SIM card is set to transparent mode you will be unable to receive any
calls to your cell-phone or GSM module. Contact your telco to check if your
SIM card has been set to non-transparent data mode and get them to switch
it if it hasn’t.
12.8.
A Final Note on GSM Configuration
For more detailed information on configuring your codec and using
Tool
Box
,
please see the
GSM LL/ GSM
section in this reference manual.
Operational Tip:
If you want total wireless freedom consider the
T
ieline
codec
battery kit which can deliver up to 2.5 hours of broadcasting. For more information
please see the Portable Powering Solutions section within this manual.
Figure 29: The Tieline Portable Solutions Range