MTP3 -> Service indicator
ISUP -> T/CIC
SCCP -> SSN remote ss7
TCAP -> SSN local database
-----Original Message-----
From: Jacob Tinning [mailto:tinning@xxxxxxxxx]
Sent: Monday, March 20, 2006 2:03 AM
To: asterisk-ss7@xxxxxxxxxxxxxxxx
Subject: Re: Re: asterisk-ss7 Digest, Vol 13, Issue 17
On Mon, 20 Mar 2006 steve@xxxxxxxxxxx wrote:
> can any one help me in in this confusion "does chan_ss7 use A links
or F Links ?"
chan_ss7 is typically used like this:
STP --------- SEP (Asterisk / chan_ss7) One signalling link
STP ---------
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SEP (Asterisk / chan_ss7) Two signalling links
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STP ---------
As far as I undestand, A links are the links from STP to SEP in the
ascii-drawings above. So chan_ss7 uses A links for sure.
chan_ss7 can also work in a cluster:
STP ------- SEP (Asterisk / chan_ss7)
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STP ------- SEP (Asterisk / chan_ss7)
Now, the links between an STP and SEP are still A-links, but I think
the interconnect between the two SEP's can be considered an F link.
The interconnect is typically a crossed ethernet connection though, so
I don't know if it can be fully qualified as an F link according to the
spec.
Mvh. Jacob
--
Jacob Tinning
System Developer SIFIRA A/S
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