Receive Device Names

EazyLink Server, V4.4, protocol level 01

Request for Z88 RAM device names (both internal and external).

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        Client                    Server                Action
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<ESC "h">             ->  waiting
                                                Request for Devices

waiting               <-  <ESC "N"><DeviceName> First RAM device, eg. ":RAM.0"
first device
                      <-  ...                   Send remaining devices
devices...
                      <-  <ESC "Z">             <End Of Names>
all received
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