[Asterisk-Users] GSM to ISDN or TAPI

[Storer, Darren]

Hi Philipp,

PK> BUT: There is no guarantee that a SMS message reaches
PK> the destination; that's how the SMS network is designed.

That's why we implement higher level protocols that send an "ack" when alarm
delivery is vital. If the "ack" fails to arrive before timer expiry, we
resend the alarm; it's not rocket science! If the alarm is not service
affecting (Eg. information alarm) no "ack" is usually required. "You pays
your money and makes your choice". Anyone with limited experience of
protocol design, whether the transport is IP, V.24 etc., should be familiar
with these basic principles.

Other techniques that can be used to implement acknowledged SMS
transmissions between IT systems include the use of delivery reports (where
supported). As with Asterisk, there are many ways to achieve the same goal,
it's more a question of finding the combination that best suits your needs.

Just my 2ds

Darren
--
Telco>Internet<Broadcast

-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com]On Behalf Of Philipp von
Klitzing
Sent: 11 June 2004 16:12
To: asterisk-users at lists.digium.com
Subject: RE: [Asterisk-Users] GSM to ISDN or TAPI


Hi!

> for subsequent reference. Another benefit with SMS is remote alarm
handling
> which is easier to guarantee because the messages are sent via a store and
> forward system

BUT: There is no guarantee that a SMS message reaches the destination;
that's how the SMS network is designed.

Cheers, Philipp

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