Troubleshooting guide

TD 92735EN
15 May 2012 / Ver. G
Installation and Operation Manual
Unite Connectivity Manager
229
Appendix J: Protocol Limitations (input)
This appendix describes a number of protocol specific limitations and deviations and is valid
for input direction. The serial interface included in Unite CM is a successor to the system 900
module S942SI Serial Interface and the supported 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.
J.1 ESPA 4.4.4
J.1.1 Functionality
The protocol consists of blocks which consist of records which consist of data.
J.1.2 Limitations
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.
Protocol Records
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).