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GPRS, WAP, MMS and Email setup
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Hi!
I have made an implementation of MM1 ... whereby I send an m-notification.ind to a phone via SMS ( I have a connection to an SMSC ), and the phone downloads the MMS from my webserver. On my webserver, I implemented m-retrieve. These all work fine ... so long as the operator's WAP gateway is "open".
The setup that I have made works for all Nokia phones. However, when I try an Ericcson ( e.g.: t68 ), it received and understood the m-notification.ind and proceeded to download the MMS from my webserver, but it always say "Network configuration error. Please check your settings and try again". However, I did see on my webserver logs that the WAP gateway has downloaded the m-retrieve PDU ... but I could not work out why the Ericcson would give an error message. It seems to be doing something after it received the m-retrieve PDU. ( Note: DeliveryReport and ReadReports are disabled on both the m-retrieve PDU and the phone )
Also, in trying to compare the settings of the Nokia and the Ericcson ... the Ericcson's MMS settings has a setting for "Message Server". I could not find the corresponding entry for that on the Nokia phones, and there does not seem to be an entry on the Nokia phones with the same value. If I remove "Message Server", MMS on the Ericcson refuses to work ... apparently it is needed. It could not be the APN or the homepage, since they are configured elsewhere on the menu.
Can anyone also give some hints on how to find out why the t68i is complaining about my m-retrieve PDU ? I was thinking of using a GSM modem and use that to "sniff" on the UDP. I got WAP over GSM working ... so I thought I could get MMS over GSM working as well. No such luck.
Any ideas would be helpful.
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Posted: 2003-08-21 05:42:29
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Hey!
The problem could be with the HTTP HEADERS. I'm having a similar problem but it is with sending MMS from my phone to my webserver.
The phone expects (according to: MMS Center Application Development Guide Version 1.0 and Wireless Application Protocol
MMS Encapsulation Protocol Version 05-Jan-2002) HTTP status response, and wants the EXACT headers as in specification.
I have no idea how to disable some of the standard HTTP headers generated by my webserver and have major problem with MMS communication. I get the message accepted by the web server but the phone still says "Communication error"...
And about the "Message server" setting in MMS settings for Erricsson phones: I have no idea how it is called in Nokia, but this is the only possible way as I see it.
You only need "Message Server" address when you're sending MMS. When you're receiving MMS the phone knows from the "Content-Location" field where to get the message from.
So to keep it short: "Message server" is in fact an HTTP server which should be contacted by the phone in order to have the MMS message sent.
HTTP server should support HTTP POST operation and accept the POST data from the phone, then it should answer with:
HTTP:1.x/204 No content" and few other HTTP headers and that's about all about the receiving part of the protocol.
Dean
[ This Message was edited by: dean on 2003-08-21 14:58 ]
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Posted: 2003-08-21 15:49:17
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