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Cellular Phone Forum / Country Specific / Australian Group / August 2004UDHI and Enfora
Hi group. Does anybody know if the modem Enfora supports UDHI? Thanks all! > Does anybody know if the modem Enfora supports UDHI? Could you give us a few more hints? Are you talking about the SMS User Data Header Indicator? What model Enfora modem? If you're talking SMS, we're thinking about PDU-mode, right? In which case, UDHI should be passed transparently. Or are you trying for a UDHI = 1 for a text-mode interaction John Earlier, I wrote: > Or are you trying for a UDHI = 1 for a text-mode interaction If you're using text-mode, you could try AT+CSMP=65 (decimal - all text-mode header parameters seem to be given in decimal). This sets UDHI to 1 (meaning your text contains a GSM 03.40 header) and MTI to 01 (SMS-submit), with all other first octet (PDU-type) bits turned off. And that leaves you to encode and integrate your UDH field into your UD field "manually" as a 7-bit default alphabet text string. Whether or not the Enfora correctly handles this is another matter (although my suggestion is just an untried implementation of parts of GSM 07.05 and 03.40). John Hi all!... My modem is an ENFORA GSM/GPRS SPIDER SA, I want to send AT Commands to the modem to Configure any parameter. But, the AT command, i need to send Over the Air with SMS. I've tried with the UDHI field, but it not respond. Anybody knows about this?????.... Thanks group!!!! > Earlier, I wrote: > [quoted text clipped - 16 lines] > > John > Hi all!... > [quoted text clipped - 3 lines] > command, i need to send Over the Air with SMS. I've tried with > the UDHI field, but it not respond. What AT commands are you giving the modem? Does the modem respond to any of them? Can you capture and paste the commands and responses from a session here? John I've sent diferent AT commands, for example: AT+CMOD=1 via SMS (UDHI, to a specific port). I don't get response. The idea is to send AT commands via SMS to Activate the PDP Context, then Send AT Commands via IP-Data to receive the response. Thanks John and all! > > Hi all!... > > [quoted text clipped - 12 lines] > > John When I send de SMS with UDHI, the modem recive the SMS as Text (Header + Command) in Hexa. > When I send de SMS with UDHI, the modem recive the SMS as Text > (Header + Command) in Hexa. OK, I've got a better idea of what you're trying to do. Because it's unusual to send an SMS with UDHI *to* a modem, I'd assumed you were trying to send *from* the modem to a handset. I had guessed we were talking MO SMS instead of MT. If you want to post one of these SMSs (at least the PID, DCS and User Data field) here, I'm happy to check it over for you as far as I'm able. Within the UDH, what port are you using to address the modem? John |
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