Scratching my head here... how does Telecom wire the phone cables? 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! - To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog
Scratching my head here... how does Telecom wire the phone cables? 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.
You should only need 2 wires. (Even in the old method the 3rd wire was
for the ring on slave sockets)
The 'official' standard is that the phone line RJ11 jack uses the middle
2 pins. Some phones for some reason use other pins on the phone end.
Use a multimeter to find out which of the pins connect from the BT end
of the cable to which pins on the RJ11 phone nd . Then make up a RJ11 to
RJ11 cable. The pins are 1&4 on a 4 pin BT plug, 2&5 on a 6 pin plug.
jfp.
------------------------------------------------------------------------
Jean-Francois Pirus
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!
- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog
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
On Thu, Nov 15, 2001 at 01:02:29PM +1300, Bart Kindt wrote: 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! Older TCNZ phones user the outer pins... I assume this was just to be a pain and be incompatabile and try to assert their stranglehold for as long as possible, but perhaps there really was a reason for being at odds with the rest of the world :) 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?? Usually the pss-though is done with a relay; so without power they will pass the two middle pins though (and sometimes the outer pins also). --cw - To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog
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