Just tried (for the first time) to send a message with UDH and couldn't. I set a header in the HTTP POST message as follows:
"X-Kannel-UDH": "%06%05%04%15%82%00%00"
 
As a result of my request, Kannel sent an SMS message to another Kannel, which produced an HTTP message to an application I wrote that checks the headers. The "X-Kannel-UDH" header was missing. Why?

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