ASCOM UPAC Series User Manual

TD 92483GB
2008-06-05/ Ver. B
Installation and Operation Manual
UPAC- Unite Packet for Messaging and Alarm
97
Appendix F: Protocol Limitations
This appendix describes a number of protocol specific limitations. The serial interface
included in UPAC is a successor to the system 900 module S942SI Serial Interface and the
suppois not supported byis not supported byrted protocols are described in the document
Protocol, Serial Data Interface S942SI, TD 92088GB. To be able to fully understand the
limitations it is recommended to have this document available.
F.1 ESPA Limitations
The protocol consists of blocks which consist of records which consist of data.
F.1.1 Protocol Blocks
The original ESPA 4.4.4 specification has 4 different blocks and an additional 5’th block for
equipment manufacturer specified functionality. The 5’th block is not used by Ascom and
Ericsson dialect, instead two additional blocks 7 and 9 are specified for the dialects.
F.1.2 Protocol Records
Figure 125.
Request for license
(Block 7, Ascom and Ericsson dialect): This block is not supported since license handling
differs from how it was done in 942SI. The block
is NAK:ed if received.
Request for module key number
(Block 9, Ascom and Ericsson dialect): This block is not supported since license handling
differs from how it was done in 942SI. The block
is NAK:ed if received.
Call type: Speech call (Record 4.2): Speech paging is not supported. This record is
handled as a standard paging (Record 4.3)
Call type: Remote ack of old paging in
mobile unit (Record 4.5, Ascom dialect): This record is NAK:ed since it is not supported by
UNITE.
Call type: Erase of old paging
(Record 4.6, Ascom dialect): If neither “ID” (Record 9) or “Running Number”
(Record D) is included in the message, the
message is NAK:ed. In 942SI it was ACK:ed but
didn’t function.
Call type: Cordless phone, undefined
type (Record 4.7, Ascom dialect): Sent as standard paging (Record 4.3).
Call type: Cordless phone, internal type
(Record 4.8, Ascom dialect): Sent as standard paging (Record 4.3).
Call type: Cordless phone, external type
(Record 4.9, Ascom dialect): Sent as standard paging (Record 4.3).
Number of transmissions
(Record 5, standard ESPA): This record is accepted but ignored since it is not
supported by UNITE. The parameter can be set
in advanced GUI under “system 900”->”Number
of message transmissions” and is then valid for
all messages independent of the record value.

ASCOM UPAC Series Specifications

General

Brand	ASCOM
Model	UPAC Series
Category	Conference System
Language	English