Chapter 11 - PhoneBook
11-2 Courier User Handbook
audio). The internal ISDN codec also allows you to use the
Courier as an ISDN codec for the transmission of live audio.
[No Modem] – This is the mode used when Courier is playing audio down a
telephone line and requires a suitable telephone hybrid unit to be
connected between the Courier and the telephone line.
11.1.2. Transfer protocol used
This defines the protocol which you need to use for the successful transmission and
reception of the audio when it is being sent as a data file.
Various different versions of the zmodem protocol are used for file transfer.
Zmodem is the most popular modem file transfer protocol available and is
supported by the majority of modems currently around. The different versions of
zmodem supported by Courier allow different levels of error checking and error
correction.
[Auto] –
This automatically chooses one of the following protocols
depending on the handshake the Courier receives from the
modem at the receiving end of the call.
This is the
recommended protocol to choose for data transfer.
[Full] –
This version of the zmodem protocol sends all of the data in one
session. It does not wait for any form of acknowledgement but does re-
transmit the data if it receives an error from the host.
[Window] –
When using the window option, the Courier continues to send the
data whilst waiting for an acknowledgement, but it does require an
acknowledgement to carry on if more than 7k of data has been sent
without receiving an acknowledgement. If it doesn’t receive an
acknowledgement within a set period of time, the Courier resends the
data from the point of the last received acknowledgement.
[Segment] –
This variant of the protocol sends out a 7k packets of data and
then waits for an acknowledgement before it sends the next
packet.
[WaitAck] –
This setting waits for an acknowledgement after every 1k packet
before it sends the next packet of data.
In general use, you should choose the “Auto” option for all file transfers. If this
doesn’t work correctly, then try the others in the order in which they appear above.
Содержание COURIER
Страница 1: ...Portable Hard Disk Recorder User Handbook ...
Страница 32: ...Chapter 2 Introduction 2 18 Courier User Handbook This page is deliberately blank ...
Страница 48: ...Chapter 4 Menu operation 4 6 Courier User Handbook This page is deliberately blank ...
Страница 80: ...Chapter 6 Playing Monitoring 6 6 Courier User Handbook This page is deliberately blank ...
Страница 102: ...Chapter 7 Editing 7 22 Courier User Handbook This page is deliberately blank ...
Страница 132: ...Chapter 10 Battery power management 10 6 Courier User Handbook This page is deliberately blank ...
Страница 162: ...Chapter 12 connectivity Courier User Handbook 12 20 This page is deliberately blank ...
Страница 196: ...Appendix A upgrading the firmware A 4 Courier User Handbook This page is deliberately blank ...