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NowSMS Support Forums ⬆ NowSMS Support - SMS Issues ⬆ Archive through September 15, 2003 ⬆ |
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| Author | Message | |||
| Anonymous |
Hi, I'm in the USA, new, and do not fully understand how your software interacts with the operator's MMSC equipment. Can you describe sample call flow scenarios when a mobile sends/receives thru the operator's equipment, versus the call flow of when it is bypassed using the software as a gateway, and as an MMSC, and as VASP? | |||
| Bryce Norwood - NowSMS Support (Bryce) |
Hi, At present, we do not support interfacing into an operator MMSC as a VASP (Value Added Service Provider). We'll be introducing some options for some of these interfaces in the coming weeks/months. At present, we bypass the operator MMSC, which works quite well on the GSM networks in the USA (T-Mobile, Cingular, and AT&T Wireless). The flow is: When you send an MMS message from one phone to another phone number, the phone makes an IP (internet protocol) connection (either with GPRS or dial-up) to an MMSC Message Server and submits a message and a list of intended recipients. The MMSC saves the content of the MMS message and makes it accessible via an HTTP URL (e.g., http://host.name/path/file.mms). The MMSC then sends a specially formatted MMS notification message in a binary SMS format to the recipient. This message contains MMS header information, and a pointer to the URL that contains the content of the message. When the recipient phone receives this special message over SMS, it opens up an IP connection (either GPRS or dial-up) to retrieve the content of the message. Where the process can break down is that settings are configured on the phone related to the sending and receiving of MMS messages. In order to send or receive MMS content, the phone is configured with settings to make an IP connection. Included in these settings are either a GPRS Access Point Name (APN) or dial-up IP settings and a username and password associated with that connection, plus the IP address of a WAP gateway. There is also a configuration setting for an MMSC message server (called an MMS home page on some phones, and a relay server URL on some phones), but that is really relevant only to sending messages. -bn | |||
