參數(shù)資料
型號: PSB7110
廠商: SIEMENS AG
英文描述: Enhanced ISDN Data Access Controller ISAR
中文描述: 增強綜合業(yè)務數(shù)字網(wǎng)的數(shù)據(jù)接入控制器專家組
文件頁數(shù): 133/164頁
文件大小: 1173K
代理商: PSB7110
_________________________________________________PSB 7110
Siemens Aktiengesellschaft
Page 133
3.11
Fax Class 1 Implementation
This chapter gives more details on the implementation of fax group 3 on the ISAR PSB 7110. It is
expected that the controlling protocol residing on the host is either an implementation of the Service
Class 1 Command Set (EIA/TIA-578) or ITU-T T.30.
It must be noted that for pump mode "Fax Modulations", the SART unit is not to be configured as
described in 3.4 SART Configuration. Transmission and reception of HDLC framed and binary data is
only controlled by pump control commands (see 3.6.2) and pump status events (see 3.7.3), i.e. the
SART must not be reconfigured to HDLC or binary mode.
However, data is transfered by use of SART data messages together with framing dependent control
commands and status events (see 3.5 SART Data).
Fax Pump Control
Pump control commands
Host
ISAR
3.6.2
Pump status events
ISAR
Host
3.7.3
Fax Data Transfer
SART control commands - along with transmit data
Host
ISAR
3.5.2
SART status events - along with receive data
ISAR
Host
3.5.1
For configuration of the whole data path, first the buffer should be configured and then the pump and
the IOM-2 interface. Configuration of SART and pump to the required framing and modulation
scheme (e.g. HDLC framing and 300 bps/V.21Ch2) is set by single pump control commands as
mentioned above. Further configuration data (modulation and silence duration) is passed by
additional parameters to the pump control commands.
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