AFAIK, It is some kind of character set code. That byte is intentionally put
there for
switches that are not Q.SIG or ETSI. Technically, the display IE is only to be
sent
from the network to the user. So sending it to the network is undefined and
switch
dependent.
Got it. The single instance where I saw a string on the display was when I called my telco's
technical support.
Connected line name support is fully supported only by Q.SIG since it actually
defines how to pass the name. Using the display IE is a defacto standard but
is only really going to work in the network to user direction.
Too bad, I was already dreaming of offering some customers a few nifty features, like greetings,
email addresses for further contacts, booking confirmation numbers for hotels, etc...
I shall still go through all the charset options to see whether there is any effect. Meanwhile I
managed to get a pcap trace of a calling device and the display element is not at all present. I
guess they are filtering it out.
Thank you, Richard.
jg
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