CAS signalling and E1 card

Answered Question
May 24th, 2010
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Dear all,


I am a newbie in voice so pls dont mind if i ask something stupid or ambiguous.


Suppose i have a E1 card that cant be divided into slots. I think its called unstructured(or unbalanced ?) E1 card. Since i cant divide it into slots, i cant use CCS because there are no slots. So in such a case, can i use CAS signalling and will it work ?

Correct Answer by Abu Hadee about 7 years 4 days ago

Hello John.


If you can not configure timeslot, you can not use it as CAS. Because CAS also need timeslots. The Card type you are you talking can only be use for Data as it can use as full E1/T1.


Hope this helps


Thank you

- abu

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paolo bevilacqua Mon, 05/24/2010 - 08:01
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Which exact card (part number) do you have, which exact router, and what are you trying to do ?

Jonn cos Mon, 05/24/2010 - 09:08
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Dear Sir,


Any E1 card that doesnt support time slotting. This is what we call unstructured E1 right ? pls correct me if i am wrong.


Router is lets say 2801.


I am not asking anything related to real life. Just want to clear my concepts as to whether i am thinking in right direction. Consider this question from a voice student


Pls clear it

paolo bevilacqua Mon, 05/24/2010 - 09:14
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The only cards you can use for E1 voice are the VWIC and VWIC2.

Nothing else will work.

Jonn cos Mon, 05/24/2010 - 09:28
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Dear Sir, pls dont consider it a dissrespect as i really like your knowledge (i have seen your other posts).


But in my case, i am sorry you are not at all being clear. I already mentioned, i am a total newbie, your answers are not at all relevant to what i am asking. Pls either clarify in detail, or leave the post and let others help me out.


I know its being sound harsh and i am really sorry. I know all the expert would have mind what i said but after ppl seeing that some one replied, they will not try to answer it. (it happened to me in past) and my confusions remained unanswered


Thanks, anyone else pls clear my confusion..

Correct Answer
Abu Hadee Tue, 05/25/2010 - 03:37
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Hello John.


If you can not configure timeslot, you can not use it as CAS. Because CAS also need timeslots. The Card type you are you talking can only be use for Data as it can use as full E1/T1.


Hope this helps


Thank you

- abu

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