In reply to a post by IanBB:

In reply to a post by whitelightning1:

Hi IanBB. Do you mean you use your mobile to do a dial up connection?

Yes, that's exactly what I do.

Thanks Ian. What mobile do you use? I have a Galaxy S2 and I can't find the feature. Don't think I've come across a mobile for a few years that can do dial up connections.

In reply to a post by whitelightning1:

Thanks Ian. What mobile do you use? I have a Galaxy S2 and I can't find the feature. Don't think I've come across a mobile for a few years that can do dial up connections.

Its called "circuit switched data" (CSD) and its not enabled on most SIM cards unless you ask the network to enable it. On my.t-mobile.co.uk I can enable it for a one off cost of £20 and that allocates special incoming numbers to my account so I could receive faxes. (if I was using my old Nokia Communicator).

The reason its not enabled by default is the network has to maintain a modem bank at their end, the GSM network passes the data through and the modem bank at the network makes the call to the destination.

I thought that since the days of ADSLx all you had to do was access it through your normal internet connection, within the timeout period? (To read, rather than send to).

I'm using a Nokia 9300i

In the internet settings I have a choice of GSM Data (which I use for BT) GPRS, IP Passthrough & Wireless LAN

In reply to a post by jchamier:

Its called "circuit switched data" (CSD) and its not enabled on most SIM cards unless you ask the network to enable it. On my.t-mobile.co.uk I can enable it for a one off cost of £20 and that allocates special incoming numbers to my account so I could receive faxes. (if I was using my old Nokia Communicator).

The reason its not enabled by default is the network has to maintain a modem bank at their end, the GSM network passes the data through and the modem bank at the network makes the call to the destination.

I agree that you can get another number allocated for incoming faxes but that is irrelevant to the current discussion.

As for for maintaining a modem bank that is pure bunkum! The only place where modems exist are on the phone itself and the receiving party (in this case, BT)

In reply to a post by IanBB:

As for for maintaining a modem bank that is pure bunkum! The only place where modems exist are on the phone itself and the receiving party (in this case, BT)

You sure? I was told by a senior Orange engineer in the mid 90s, when I was apparently one of 250 customers who used CSD.

GPRS quickly took over of course

Yes!

I use the same dial-up number on my mobile as I do on a laptop using BT through a standard modem on a BT line (can't remember the last time that was used though!)

The connection type on the mobile is interesting though, Remote modem:Analog, Modem speed: 9600 **

Shockingly low speed by todays standards but to send a quick email where otherwise you could be restricted by SMS limits it's fine. I know I can use my mobile operators GPRS/EDGE connection to do the same but by using the BT dial-up number every now and again I am keeping my side of the bargain where I am making a chargeable call to their network.

** Just changed the connection speed to 14,400 so now running on rocket fuel on an old data connection ***

*** And now running at 28,880! Seems that is the limit for data calls unless one has ISDN provisioned (?)

Edited by IanBB (Mon 17-Dec-12 13:43:00)

56k half-duplex? Sounds about right.

On a mobile?

No - at the far end.