1. Tone dialling from psion 3
A couple of days ago, I posted a plea from "Alan J.Flavell" (SY07 at
directly BT-connected 'phone. He still hasn't got write access to
Usenet, but he writes in private mail to me:
I should like to extend my thanks to uk.telecom for their very
useful advice. Having tried the settings of tone=4units, gap=
4 units, I got much better results, provided I was careful with
the distance to the microphone.
Increasing the lengths (as suggested in the Psion manual for
dealing with adverse situations) does not help, indeed it seems
to make matters worse. On the other hand I found 3/3 less reliable,
and 2/2 unusable, so I think I've settled on 4/4.
It now works well with a borrowed phone (I cannot tell you what type,
it has no model name, only a BT logo and approval number) - in spite
of the fact that this phone's mike picks up a lot of hash from the
"works" of the Psion - I can hear hash in the earpiece and there's
even a little !eek when I push the key to start the dialling!
(Must be electromagnetic coupling - unlike the dialling itself).
On my own phone (an Audioline TEL45 that otherwise works well for
me) Psion dialling is significantly less reliable, and initially I was
not able to get it to work at all. (Especially with the initial
settings of 8/8 before I asked advice). The distance of the Psion
from the mike seems very critical.
I'll be trying other telephones with renewed confidence. Thanks
a lot to the several informants.
Crossposted to comp.sys.palmtops, at Alan's suggestion.
U of Cambridge Computer Lab, Pembroke St, Cambridge CB2 3QG, UK
2. 2005 Update
3. Technique for Tone Dialing using LX-DIAL
4. Distance issue with Covad
5. OLEDB Rowset object MoveFirst fails for datatype varchar 2000
6. PSION 3a: Sending Hayes-AT instead tone-dial from Data-app?
7. How to receive the xml doc sent through HTTP?
8. Tone Dialling
9. Can the Pilot generate dial tones?
10. Tone dialing from a HP200LX from Phone?
11. Tone dialing phone book
12. Tone dialling facility