[Asterisk-biz] E1 with SS7 signaling

Tue Aug 2 06:25:34 MST 2005

Thank You,

Thats a great web site

> www.footnotess7.com is now open to begin the creation of SS7 that can
> be used with asterisk.
> 
> Sign up and list which and what parts you would like to work on.
> 
> Race V.
> 
> -----Original Message-----
> From: asterisk-biz-bounces at lists.digium.com
> [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Francisco
> A. Lozano Sent: Sunday, June 12, 2005 12:45 PM To:
> c.savinovich at itntelecom.com; Commercial and Business-Oriented Asterisk
> Discussion Subject: Re: [Asterisk-biz] E1 with SS7 signaling
> 
> I don't fully understand the full SS7 "world", but one think I'm sure
> about is that if you're going to be part of a SS7 signaling network,
> you
> 
> should learn a little about it, it needs much deeper knowledge than
> having a pair of E1s with EuroISDN. Take a look at "Signaling System
> #7", by Travis Rusell.
> 
> Christian Savinovich escribió:
> 
> > Francisco:
> >
> >  Can you help me understand this :) ?.
> >
> >  I am used to think one port with 24/30 channels, maybe one port
> >  doing
> signaling (E1).   That's the way the Digium port will work.   How does
> that differs from the SS7 port level, are they receiving the same
> number of channels? Is it like channel 16 (on an E1) sends the
> messaging to an out of band channel on the SS7 port, and if so, what
> channel is that? if there are 30 channels on the digium port, will the
> SS7 port handle 30 conversations? >I keep thinking one Digium port to
> one SS7 port, since that's all I need.  And finally, are all SS7 ports
> compatible?, or are there "implementations"?, if so, how the heck am I
> going to know if what I am paying for will work? > > Thanks a lot > >
> >On Jun 12, 2005, at 3:51 AM, Francisco A. Lozano wrote: > >At 09:21
> AM 6/12/2005, you wrote: >(Please correct me if I'm wrong) > >SS7 is a
> complex stack involving many layers (MTP 1-3, SCCP,TCAP, ISUP). >I
> think you're talking about SSP and SCP.In SS7, one or more channels in
> one or more E1s transport the signaling between a SSP(Service
> Switching Point) and a SCP (Service Control Point). With only one
> channel between an SCP and a SSP, an SCP can signal a huge amount of
> calls to the SSP. > >What people usually talks about when talking
> about SS7 is ISUP, which is somewhat like "EuroISDN". Then, when
> people here talks about "sending calls over SS7", they really mean
> "sending calls over ISUP". > >Brian West escribió: > >It is my
> understanding that you DO NOT send calls over SS7 you only  >signal
> with it.. and a few channels on an E1 can signal many calls a 
> >second. > >/b >--- >Anakin: “You’re either with me, or you’re my
> enemy.” >Obi-Wan: “Only a Sith could be an absolutist.” > >On Jun 12,
> 2005, at 3:51 AM, Francisco A. Lozano wrote: > >Maybe with 24 E1s you
> can afford a small SSP ... SS7 licenses for  >asterisk are quite
> expensive! > >Michael Welter escribió: > > >The Honduras telephone
> company, Hondutel, will supply E1 circuits  >with SS7 signaling only
> (no PRI, no R2, nothing but SS7).  The SS7  >is on a separate circuit
> (I assume V.35). > >We would like to interface Hondutel with one or
> more Asterisk  >systems--we want Asterisk to be the bridge between
> Hondutel and  >VoIP services.  Initially we'll have one E1 for a proof
> of concept  >trial.  If successful the project will immediately grow
> to ~24 E1  >circuits. > >The problem is finding an inexpensive
> interface with the E1/SS7  >circuit that will interoperate with
> Hondutel. > >Does anyone have any suggestions? > >Thanks, >
> >_______________________________________________ >Asterisk-Biz mailing
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> >_______________________________________________ >Asterisk-Biz mailing
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> 
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