[asterisk-users] Digium TE220 supported protocol

Benoit maverick at maverick.eu.org
Fri Jan 16 06:10:22 CST 2009


Benoit a écrit :
> Laurent a écrit :
>   
>> Those terms would be ISDN-related. VN4 is Version Number 4, and
>> ETSI is the European standards-adopting organization for telecoms.
>> So you might want to check for "E1 support" (ISDN in Europe,
>> basically) if you want to connect a PRI-capable equipment - I
>> assume that's what you are looking for since you mentioned the TE220.
>>
>> If you read French, you might want to look at this page also:
>>
>> http://blog.nicolargo.com/2008/01/installation-dune-carte-digium-avec-asterisk.html
>>
>> I found it very useful when I installed recently a TE220 card.
>>   
>>     
>
>
> Hi,
>
> yes it's for connecting an PRI line. In fact i already have one PRI
> connected to a 'real' PRI line,provided
> by France Telecom. But this one is a little bit special, it's for
> connecting to this kind of box:
>         http://www.oneaccess-net.com/en/one400.htm
>
> Which is a SDSL/PRI gateway (yes, i asked for a direct SIP/H323
> connection, but "it's not in our product line" was
> the only answer ..).
>
> Until know the L1 link doesn't goes up, so i'm looking for every bit of
> info i can use. The FT line is configured like that:
>
>     span=1,1,0,ccs,hdb3
>     bchan=1-15
>     dchan=16
>
> And work quite well, i've duplicated this for the access thru the One400
> box:
>     span=2,0,0,ccs,hdb3
>     bchan=32-46
>     dchan=47
>
> With no luck until now. I'm reading the one400 manual, and here are the
> defaults setup for the PRI interface:
>    
>               CLI(config)# interface pri 5/0
>               CLI(config-if)# physical-interface E1
>               CLI(config-if)# framing Df
>               CLI(config-if)# linecode hdb3
>
> And here are the available framing:
>
>            CLI(config-e1)# framing {none | df | mf | emf}
>     Specifies the framing type.
>         None: no framing. Only used for CES / unstructured mode
>         Df: double frame, no CRC4. For E1 only. (Default value)
>         Mf: multiframe (CRC4). For E1 only
>         Emf: extended multiframe (CRC4). For E1 only.
>         Sf: Super-frame (for T1 only)
>         Esf: extended super frame (for T1 only)
>
> I also found this:
>
>     The ONE 400 supports CCS mode (transport of
>     signaling messages over a D channel). CAS (Channel Associated
>     Signaling) mode is not supported.
>
>
> However there is no references to this 'double frame' mode in the
> dahdi/system.conf span configuration options
> # framing::
> #   one of 'd4' or 'esf' for T1 or 'cas' or 'ccs' for E1 and BRI.
> #  'd4' could be referred to as 'sf' or 'superframe'
>
>   

Also, i've used a straight Cat5E to connect the One400 to the TE220, both
seem to share the same Pin setup:
    One 400:

    1: RX (+)
    2: RX (-)
    4: TX (+)
    5: TX (-)


    TE 220:

    1: RX
    2: RX
    4: TX
    5: TX


Should i do some special crossing cable instead ? connecting Tx from one
side to other side Rx ?




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