View previous topic :: View next topic |
Author |
Message |
fa_07
Joined: 03 May 2008 Posts: 8 Location: Algeria
|
Posted: Wed Jun 25, 2008 1:09 pm Post subject: how to test a bill-poster of a telephone? |
|
|
how to test a bill-poster of a telephone? |
|
Back to top |
|
|
torbjorn
Joined: 07 Jun 2007 Posts: 370 Location: Sweden
|
Posted: Thu Jun 26, 2008 8:28 am Post subject: |
|
|
That depends on which kind of billing pulses is used in the telephone network where the unit is to be used.
Some networks use 12 kHz or 16 kHz billing pulses while other ones reverse the polarity of the line current to indicate a billing pulse.
Information on telephony standards, at least for european countries, can be found at http://pda.etsi.org/pda/queryform.asp . A good general standard (but a huge PDF document) that contains aspects on most european networks is the ETSI EN 300 001 . |
|
Back to top |
|
|
|
|
|
You can post new topics in this forum You can reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
eServiceInfo on FB -
Service Manuals Free Download -
Service Diagrams
Free TV Schematics Download -
HARDW.net -
Pinout Master -
Jabse Service Manual Search -
Jabse.InK -
onTap.bg
SnimkiOt.com -
Poblizo.com : пътешествия
Latest Service Manuals :
BJC 6500pc CANON • • TV-SE211 Aiwa • LE26R71B SM 4719626066 Samsung • hfe 320 service en PROTON • pxt4401 3 Philips • L1733TR_L1933TR LG • M600 1 1911-ROA2195796 F Sony Ericsson • 2sc3896 Inchange Semiconductor • 1079936 B6700 B7700 APL700 RefCard 1974 •
|