[VoIP] Channel Bank on Ebay [not mine] and E&M

[Steph Kerman]

To add to what I said below,an RJ11 no more refers to the plug or jack than a DB25 or DE9 (or DB9 as some insist on saying) refers to a serial RS-232 port or possibly a parallel port in the case of a 
DB25.

An RJ11 is defined as a 6 position jack terminating a customer line connecting towards the PSTN.  The 6 position jack on the back of a telephone set is NOT an RJ11 since plugging a phone into it will 
not deliver dial tone to a phone plugged into it.  RJ11 defines a physical connection port into the PSTN, not a piece of connecting hardware.  The same applies to all other RJs when the terminology is 
correctly used.

=SK=

Thanks for the clarification.

That has to be a moniker that someone invented, in other words, sort of
a fiction.  It has no real legitimacy no matter how many people may use
it, the way RJ11 and most others do.  Many people also refer to the
handset jack as an RJ22, another mis-invention in this case since the
RJ22 actually is a documented and defined interface that uses a 25 pair
Amphenol mini-ribbon connector to connect to multiple lines.

Regardless of its popular use, RJ has a formal meaning.  It refers to a
"registered jack" under the FCC program that was established to allow
direct connection of privately owned equipment to the public network.
Since the Bell System was never forced by the FCC to allow connection of
privately owned equipment to their own phones at the handset interface
(as opposed to directly to the line itself), no RJ was ever defined
using the 4-position jack.

Steph

Mark Rudholm wrote:
> RJ9 is the small (four conductor positions) connector
> used on handsets and handset cords.
>
> (it's not normally used for phone lines, with some
> weird exceptions, like Sangoma FXS PCI cards)
>
> Steph Kerman wrote:
>   
>> RJ9?  My Registration Service Manual jumps from RJA3 to RJ11.  What is 
>> an RJ9?
>>
>> Steph
>>
>> Mad Mark wrote:
>>     
>>> I don't see any RJ9 (telephone) ports on it anywhere. How are phones hooked to such a unit??
>>>
>>>
>>>
>>>   
>>>       
>>>> Date: Thu, 6 Dec 2007 07:19:00 -0800
>>>> From: ikj1234i at yahoo.com
>>>> To: voip at ckts.info
>>>> Subject: [VoIP] Channel Bank on Ebay [not mine] and E&M
>>>>
>>>>
>>>> Currently on Ebay there's a Coastcom channel bank with
>>>> a total of 2 T1's and 48 FXS ports.  Initial asking
>>>> price is $19.99. [Item number: 120193396868]
>>>>
>>>> I have no interest in this item except that I have an
>>>> identical Coastcom unit here which I can say is
>>>> definitely Telco quality, *not* "consumer" grade! 
>>>> Manuals are freely downloadable in PDF format from
>>>> coastcom.com.
>>>>
>>>> Additionally I have several 4W E&M cards and I would
>>>> be very willing to consider sending a couple of them
>>>> (for shipping costs only) to someone on list if they
>>>> will use them...  Each plugin card supports two
>>>> separate 4W E&M trunks...
>>>>
>>>> Max
>>>>         
>>>   
>>>       
>> _______________________________________________
>> VoIP mailing list
>> VoIP at ckts.info
>> http://lists.ckts.info/mailman/listinfo/voip
>> Project Web Page: http://www.ckts.info/
>>     
>
> _______________________________________________
> VoIP mailing list
> VoIP at ckts.info
> http://lists.ckts.info/mailman/listinfo/voip
> Project Web Page: http://www.ckts.info/
>
>