Question

GSM/SMS concepts

Asked by: ibo

Hi Ive been reading some of the discussions on how sending of sms operates. Id like to you guys to validate and confirm my understanding so far :

so ive heard there are 3 ways to send messages :

1) cellphone --> SMSC (Telco)
    * this will send one sms message at a time
    * each cellphone has its own mini GSM modem
2) pc --> gsm modem (with simcard from provider) --> SMSC (Telco)
    * this will enable you to send messages by batch, close to 900 msgs per hour
    * question : is it possible to have more than 1 GSM modem to increase the number of   messages?
3) pc and a direct internet connection to telco.
    * is this some kind of special internet connection/line? leased line? must be a dsl or cable?
    * enables you to send bigger number messages. ie. 600 msgs per minute
    * there are several protocols that may be supported by SMSC's.. such as
       SMPP, UCP, CIMD2, OIS/TAP and probably SMTP for newer gateways (?)

* Which one is the most popular and most preferred protocol? smpp? ucp? in in Asia (Philippines)
* Question: GSM Modem are wireless? or are there GSM modems that are not wireless?
* Question : where does kannel comes is? lets say im already have a service agreement with one telco/SMSC for a subscription and i have a GSM modem.. would i need Kannel? is kannel only for SMSC operators?
* If i want to implement a "PULL" sms service, do i need to have a special agreement with the telco or is just a matter of parsing the incoming messages and executing the corresponding actions (in simple terms).

sorry so many questions.. hope you guys can clarify these things for me. Im a developer and im trying jump in the wireless bandwagon :)

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Asked On
2003-09-28 at 08:36:34ID20751039
Tags

sms

,

gsm

,

kannel

Topic

Global System for Mobile Communications (GSM)

Participating Experts
2
Points
125
Comments
9

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