Thank you for the reply. With regards to MO, with a GSM modem, we would have our own SIM card w/ its own phone number that anyone from around the world could msg to. They would have to pay the long dist. txt msging fees though. What about sending - would we be charged for over-seas messaging for MT?
Using an aggrigator, for MO, we would setup a shortcode through them and their API would call code on our end, correct? For MT, it's a basic fee, if purchased through a bulk supplier like Zim TynTec, Clickatell, or Mobile-XS, right?
They have access on several world-wide networks. Have they setup something like Kannel, and a GSM modem to communicate with all these carriers, or CDMA and forged relationships with all the carriers. I suspect it is the latter, as they keep adding new networks. Ideas?
How could we get access on these networks without going to through a carrier like them, or is it worth it? What's the process?
Thank you.
----- Original Message -----
From: "Davy Chan" <[EMAIL PROTECTED]>
To: "Baden de Bari" <[EMAIL PROTECTED]>
Subject: Re: Kannel and GSM modems
Date: Sat, 18 Dec 2004 10:31:25 +0800
>
> **>From: "Baden de Bari" <[EMAIL PROTECTED]>
> **>To: "Rafael 'Dido' Sevilla" <[EMAIL PROTECTED]>
> **>Date: Fri, 17 Dec 2004 11:51:47 -0600
> **>Subject: Kannel and GSM modems
> **>
> **>There are sites that post the SMS/GSM codes for most world-wide network
> **>carriers. So Kannel uses a GSM modem to link up to these carriers?
> **>
> **>For example, if we want to send in the US and Canada, we would need some
> **>sort of agreement with the network carriers to send to customers on their
> **>networks? ie. To send a msg to a user in Canada using Rogers Wireless:
> **>we have the number, and want to push the message to them.
> **>
> **>As I'm not too familiar with the use of GSM modems, I would like some
> **>more in formation about how to use them with Kannel and how to link up
> **>to world-wide carriers?
> **>
>
> Please send text-only mail to the mailing list. Some of us
> don't use HTML-enabled mail readers due to many reasons.
>
> I will reply to all three of your emails in this email.
>
> GSM and CDMA are two different technologies to accomplish the
> same thing: send voice and data to mobile terminal. These mobile
> terminals can be mobile phones that support voice, SMS, data,
> a pretty color screen, etc., or they can be modems that support
> limited functionality (maybe just SMS and data).
>
> GSM uses a Subscriber Information Module (SIM) to store
> information on how to connect to the Mobile Network Operator (MNO)
> that is his/her home operator. The SIM can be moved from one
> GSM device to another. This allow you to use different
> devices with the same SIM (allowing easy upgrades of phones)
> or use different SIMs with the same device (allowing you to
> try different MNO to see if they have better coverage or lower
> pricing tariffs).
>
> CDMA uses the International Mobile Equipment Identity
> (IMEI) number (or equivalent) to determine if the device
> (phone, modem, etc) is allowed on a particular network.
> As a result, moving a device from one MNO to another requires
> you to register your device with them.
>
> The way Kannel uses a GSM modem is via the AT commands as defined
> by the ETSI TS 07.07 specifications. Kannel sends AT commands
> to the GSM modem (AT+CMGS to send an SMS, AT+CMGR to read
> an SMS, etc.) and reads the responses. Normal procedure is:
> 1. Buy a GSM modem that supports the ETSI 07.07 AT commands
> (some phones have builtin modems that support the AT commands)
> 2. Attach the GSM modem to the serial port of the host running Kannel
> 3. Get a SIM from an MNO
> 4. Get a phone number associated with the SIM (usually pre-assigned
> by the MNO or you might be able to pick the phone number for
> a list available from the MNO).
> 5. Plug in the SIM to the GSM modem.
> 6. Start sending and receiving SMS.
> This procedure [minus steps 3 and 5] also works with a CDMA modem
> so long as the CDMA modem also supports the AT commands in the ETSI
> documents (my update to the userguide will list the requied AT command
> set used by Kannel).
>
> When you send an SMS, the message will originate from the phone
> number assigned to the SIM. When someone wants to send you an
> Mobile Originated (MO) SMS, they would send it to the phone number
> assigned to your SIM.
>
> Most MNO's will have roaming agreements with other MNO's so their
> home subscribers can roam to the other MNO's network and still
> have phone service (at higher cost). Ususally, the roaming
> agreements also states that the subscribers from one MNO can
> send SMS to subscribers on the other network. This allow for
> someone in Hong Kong to send SMS to someone in France.
>
> Since the MNO's have the agreements to pass SMS to other
> MNO's, in the GSM world, you do not need to get an agreement
> specifically to do this.
>
> For CDMA, it's a different world. Text messages in the CDMA world,
> was originally Mobile Terminated (MT) messages (i.e. the carrier
> can send the message to you but you could not send a message
> back [no MO SMS].). More recently, CDMA added support for MO SMS.
> As a result, many CDMA MNOs did not have agreements to pass
> SMS between each other. This meant you needed to get agreements
> with each operator before you can send messages to their subscribers.
>
> Nowadays, there are SMS aggregators that can provide you with
> the means to send SMS to just about any subscriber. They have
> made the agreements with the MNOs and will provide you with
> a means to send (and sometimes receive) SMS. Some provide
> connections that use HTTP, SMPP, etc., that Kannel will
> use to communicate with them. In those, cases, you would
> not need a GSM modem. But, you would need to get an account
> from the aggregator and pay for sending/receiving the SMS.
>
> See ya...
>
> d.c.
--
Wise men talk because they have something to say; fools, because they have to say something.
web: http://www.geocities.com/badenx
email: [EMAIL PROTECTED]
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