System Functions and Features as of I7.9
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8. 10. 3. 1
Message handling
External and internal messages are first sent to the SMSC (Short Message Service
Centre), which then forwards the messages to the corresponding destination ter-
minal. The SMSC is a software package integrated in the PBX that is responsible for
the flow of messages within the PBX.
Up to 16 messages can be buffered for each terminal. Undeliverable messages (e.g.
terminal memory full) are buffered in the SMSC (up to 400 messages). Overflow of
the terminal memory is signalled accordingly on the display of the system terminal.
A new attempt at delivering buffered internal messages is made after a configura-
ble resend period. The messages are definitively deleted once the validity period,
which is also configurable, has expired. With external messages the validity period
is usually also transmitted. If not, the internal setting is also used. The resend period
for external messages is always one quarter of the validity period.
AIMS can be used to delete all pending messages or messages that are more than
three days old on all system terminals (see
).
The SMSC is configured using the AIMS Configuration Manager:
Tab. 346 SMSC settings
If the external message server is capable of handling short messages (SMS), then it
is an ESME (External Short Message Entity). An ESME always communicates with
the PBX via LAN. The PBX is capable of communicating with up to 10 different ES-
MEs. Examples of ESMEs include the IMS (Integrated Message Server) and Mailgate
(both Ascom Wireless Solutions products). The communication settings between
the SMSC and the ESME can be configured in AIMS:
Tab. 347 ESME settings
Parameter
Remarks
SMSC port
The address is used for incoming messages of an external message server.
Retransmission period
Applies only to internal messages. For external messages the resend
period is always one quarter of the validity period.
Validity period
It is only used for external messages if a validity period was not transmitted
along with the message.
Parameter
Remarks
IP address
,
Port
IP address and port of the ESME for outgoing messages
Type
The ESME type is specified here (SM application, SM gateway or SM Service
Centre).
Encryption
This parameter must match the setting on the external message server.
URL of ESME configuration
With the aid of this address a web-based configuration tool of an ESME can
be retrieved directly via the AIMS Shell.
