Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




51 posts

Master Geek


Topic # 25893 5-Sep-2008 09:05
Send private message

Cordless phones and the more simple kinds of phones work fine with an SPA2102 but some of the more complicated ones have no dial tone.

How can one tell if it will work before plugging it in and trying it?

Create new topic
205 posts

Master Geek
+1 received by user: 1

Trusted
WorldxChange

  Reply # 162374 5-Sep-2008 09:25
Send private message

try using the phone cable from the old working phones.. see if that helps.






51 posts

Master Geek


  Reply # 162376 5-Sep-2008 09:26
Send private message

Really.....so it may just be the cable?


 
 
 
 


25815 posts

Uber Geek
+1 received by user: 5544

Moderator
Trusted
Biddle Corp
Lifetime subscriber

  Reply # 162378 5-Sep-2008 09:35
Send private message

There are two different wiring types for RJ11/RJ12 patch leads. Most phones don't care however some will only work with a reverse cable.

I'm not sure what you mean by "complicated" phones - are you sure this is a regular analogue phone and not a Centrex / Digital phone?




51 posts

Master Geek


  Reply # 162382 5-Sep-2008 09:43
Send private message

By complicated i mean it has transfer buttons ect.....but deffinatly analog phones.

Ill try an RJ11


25815 posts

Uber Geek
+1 received by user: 5544

Moderator
Trusted
Biddle Corp
Lifetime subscriber

  Reply # 162387 5-Sep-2008 09:59
Send private message

Tizza5: By complicated i mean it has transfer buttons ect.....but deffinatly analog phones.

Ill try an RJ11



There are plenty of proprietory 4 wire analogue phones out there. If a RJ11 reverse cable doesn't work you could assume it is. Do you have a photo at all?

3267 posts

Uber Geek
+1 received by user: 77

Trusted

  Reply # 162406 5-Sep-2008 10:44
Send private message

The issue with the cable is similar to mains wiring having a phase and neutral wire.  With double insulated mains products there is no reference to earth so it does not really matter if you swap the 2 mains wires around, but with earthed products the neatral is expected to be close to earth potential and it does matter.  Same on phone wiring, you have a tip and a ring wire and sometimes it matters depending on the model of phone you use.




You can never have enough Volvos!


2280 posts

Uber Geek
+1 received by user: 228


  Reply # 162417 5-Sep-2008 11:10
Send private message

Niel: The issue with the cable is similar to mains wiring having a phase and neutral wire.  With double insulated mains products there is no reference to earth so it does not really matter if you swap the 2 mains wires around, but with earthed products the neatral is expected to be close to earth potential and it does matter.  Same on phone wiring, you have a tip and a ring wire and sometimes it matters depending on the model of phone you use.
The only things dependant on polarity would be either PABXs or their system phones. The ordinary analogue phone had to work irrespective of polarity.

Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

$3.74 million for new electric vehicles in New Zealand
Posted 17-Jan-2018 11:27


Nova 2i: Value, not excitement from Huawei
Posted 17-Jan-2018 09:02


Less news in Facebook News Feed revamp
Posted 15-Jan-2018 13:15


Australian Government contract awarded to Datacom Connect
Posted 11-Jan-2018 08:37


Why New Zealand needs a chief technology officer
Posted 6-Jan-2018 13:59


Amazon release Silk Browser and Firefox for Fire TV
Posted 21-Dec-2017 13:42


New Chief Technology Officer role created
Posted 19-Dec-2017 22:18


All I want for Christmas is a new EV
Posted 19-Dec-2017 19:54


How clever is this: AI will create 2.3 million jobs by 2020
Posted 19-Dec-2017 19:52


NOW to deploy SD-WAN to regional councils
Posted 19-Dec-2017 19:46


Mobile market competition issues ComCom should watch
Posted 18-Dec-2017 10:52


New Zealand government to create digital advisory group
Posted 16-Dec-2017 08:47


Australia datum changes means whole country moving 1.8 metres north-east
Posted 16-Dec-2017 08:39


UAV Traffic Management Trial launching today in New Zealand
Posted 12-Dec-2017 16:06


UFB connections pass 460,000
Posted 11-Dec-2017 11:26



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.