July, 2008

SMPP Connection Types – Sender, Receiver, Transceiver

When making a connection to an SMPP server, there are three different types of connections that can be supported. A “sender”, or “send only”, connection is allowed to transmit messages only over the connection, it cannot receive any messages. (Some SMPP servers will still deliver SMPP delivery receipt messages over a “sender” connection.) A...

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MMS Message Retries, Expiration, Conversion to SMS

There was a good simple question posted on the NowSMS Discussion Board. We are using the MMS Gateway service. For how long does the MMS contentstays in the system?Can we set a specific time for the message expiration?We also use the option of converting the mms to SMS with web link. Forhow long is the content stored in the platform? As I replied to that question, I realized that there are a...

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Routing SMS messages to a Specifc SMSC Route

If you need control over routing to particular SMSC connections, the logic in NowSMS works like this: When NowSMS routes a message, it first looks to see if a sender address has been specified for the message submission (normally there is not a sender address specified, unless either you submitted the message via HTTP and specified a “Sender=” parameter, or a “Forced Sender...

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One WAP Gateway for both MMS and Browser Data

Smaller mobile operators often ask us how to deploy a single WAP Gateway (or WAP Proxy if you prefer that terminology, as our marketing folks seem to prefer) to deploy both MMS traffic and general browser traffic. Of course, technically there is no reason that a single WAP Gateway can’t support both types of traffic. So if you’re not a mobile operator, you’re probably wondering...

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GSM Modem CMS Error Code List

When sending and/or receiving SMS messages with a GSM modem, if an error occurs, the modem will report a “+CMS ERROR” with a numeric code to indicate the reason for the problem. These error codes are defined in the ETSI GSM specifications, specifically GSM 07.05, GSM 03.40 and GSM 04.11. I posted a list of CMS ERROR codes on the NowSMS discussion board almost 5 years ago at...

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