At 12:45 PM 11/15/01 +1300, Juha Saarinen wrote:
Scratching my head here... how does Telecom wire the phone cables?
A Telecom BT Master uses two pins for the actual line, plus a third pin (after an internal capacitor) for the Bell in old-fashion telephones. You can ignore that one as all modern phones have their own internal capacitor and so don't use the third wire. A BT connector uses the two outside pins, if it is a 4 pin connector. Sometimes they are 6 pin, but in that case the two outer ones are not used. So: |||||| ^ ^ These two are used. At the RJ11 connector, modems use the two inner pins (the middle ones). Most modern telephones do too; BUT I have seen phones which use the two outer pins (4 pin). In such a case the cable supplied with that phone will NOT work with a modem! With regard to the passthrough on a modem: I am not sure what pins that would use, should be the inner ones on both connectors. Do make sure the modem is in fact passing the signal through! It should be offline, but it may be required to be under power?? RTFM :) Bart
I've got a Rentel 410, with an RJ-11C at the phone end, and a BT jack at the other end.
I'd like to plug that into the modem pass-through phone port, and the modem into the wall jack, to connect to the PSTN </obNetworkContent>. The modem pass-through port is RJ-11C.
If I look at modem-to-wall cables, known to work, they use the red/green pair only. Although the RJ-11C connector has six pins on those, as opposed to the four-pin variety used for the Rentel phone, physically, the connectors for the red/green pair are in the same place. However, plugging the modem cable into the phone produces no dialtone.
Does Telecom use more than the red/green pair?
-- Regards,
Juha Removing sig! For great justice!
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Bart Kindt Director, Network Operations The Internet Group Limited New Zealand - To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog