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

Thu Dec 6 15:52:25 CST 2007

It depends.  The physical jack can vary in part number depending on 
specific installation requirements.  Typically a 625A jack was used, 
which for WECo is a cover that fits over a 42A connecting block and is 
equipped with a 6 position modular jack.  A more complete description 
mentions the number of contacts equipped: "6 position, 6, 4 or 2 contact 
modular jack".

The jacks used in various telephone sets are usually in the 623 series, 
with different suffix letters.  The handset jacks are 616 series.

For decades I have watched for *any* document identifying the part 
numbers that identify the mating modular plugs.  So far I have not seen 
one.  Even the detailed descriptions in AT&T and WECo cord catalogs 
describe them without mentioning a number while using numbers to refer 
to most everything else.  The plug coding (for example H4DU for a 
typical handset cord) may have been a bit of a quagmire since WECo cords 
generally had the code for the entire cord molded onto the plug.  That 
would have required as many plug codes as there were cord codes even 
though the only difference was the raised code marking. 

A similar situation existed with previous plug-ended cord assemblies.  
The basic cord without plugs installed had a code, the plugs themselves 
had a code and the entire assy had a code.  But the code for the 
assembly was applied to the cord afterwards.  Perhaps with the 
difficulties they faced here they just threw their hands up in the air 
and gave up on this one, never assigning a code to the plugs.  Or they 
could have an internal Comcode that appears only in manufacturing docs 
and not in field docs because they did not intend field application of 
the plugs.

Steph

Mark Rudholm wrote:
> So what's the connector used in RJ11 installations called?
>
> Steph Kerman wrote:
>   
>> 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/
>>>
>>>   
>>>       
>> _______________________________________________
>> 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/
>
>   