Ron,
In your trace "Failed SMS_Alphanumeric_Sender.pcap" you have:
a) the originator TON set to National (0x02). I use Alphanumeric (0x05)
b) the originator NPI set to ISDN (0x01). I use Unknown (0x00)
It obviously won't work with the first error, and IIRC the second was
also needed, maybe not for all phones.
Keith.