Hello. I am new to this forum. If this issue has been discussed already, please inform me, but my STFW have indicated that it has not. If SS7 were available on * would it make commercial sense to use it? There are case studies on the web (courtesy of the Death Star :->) for ISPs with 10,000+ subscriber lines showing clear cost savings in transitioning from PRI to SS7 controlled IMT. My question is focused on * and its users. More detail might help. The discussion below assumes a North American PSTN and US currency. If a * user connects to the PSTN with a PRI it will cost $900/month (in 1998 according to [1]). An equivalent connection with SS7/IMT is $3000/month ($2500 for two SS7 A-links and one or two route sets and $500 for the IMT). The SS7/IMT method becomes a better deal when more than 72 VGC (3 x T1-24ch) are needed. Are there any * users that use or forsee using 72+ VGC to the PSTN? I know in at least one or two markets the monthly cost of 2 A-links is closer to $1800/month. I cannot verify any of the other costs in the model above, but they seem about right. Can anyone provide a similar PRI versus SS7/IMT cost model for any other parts of the world? [1] http://www.tmcnet.com/articles/ctimag/0998/featureBay.htm TIA, -- Mike M.
I think with IAX2 and TDMoE it is not worth the effort to think about SS7. Hemant P.S: This was told to me by a carrier who is already covering a-z countries. ----- Original Message ----- From: "Mike M" <linux-support@earthlink.net> To: <Asterisk-Users@lists.digium.com> Sent: Friday, May 23, 2003 10:03 PM Subject: [Asterisk-Users] Who would use Asterisk SS7?> Hello. I am new to this forum. If this issue has been discussed already, > please inform me, but my STFW have indicated that it has not. > > If SS7 were available on * would it make commercial sense to use it?There> are case studies on the web (courtesy of the Death Star :->) for ISPs with > 10,000+ subscriber lines showing clear cost savings in transitioning fromPRI> to SS7 controlled IMT. My question is focused on * and its users. More > detail might help. The discussion below assumes a North American PSTN andUS> currency. > > If a * user connects to the PSTN with a PRI it will cost $900/month (in1998> according to [1]). An equivalent connection with SS7/IMT is $3000/month > ($2500 for two SS7 A-links and one or two route sets and $500 for theIMT).> The SS7/IMT method becomes a better deal when more than 72 VGC (3 xT1-24ch)> are needed. Are there any * users that use or forsee using 72+ VGC to the > PSTN? > > I know in at least one or two markets the monthly cost of 2 A-links iscloser> to $1800/month. I cannot verify any of the other costs in the modelabove,> but they seem about right. > > Can anyone provide a similar PRI versus SS7/IMT cost model for any other > parts of the world? > > [1] http://www.tmcnet.com/articles/ctimag/0998/featureBay.htm > > TIA, > -- > Mike M. > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > > >
asterisk@billheckel.com
2003-May-23 10:45 UTC
[Asterisk-Users] Who would use Asterisk SS7?
I'm not too sure what exactly you mean by SS7 but I am running a system of the size you describe. We currently have 2 inbound T1s, the third is on order as we usually have > 30 channels in use and keep filling the WATS line. Bill Mike M wrote:> > If a * user connects to the PSTN with a PRI it will cost $900/month (in 1998 > according to [1]). An equivalent connection with SS7/IMT is $3000/month > ($2500 for two SS7 A-links and one or two route sets and $500 for the IMT). > The SS7/IMT method becomes a better deal when more than 72 VGC (3 x T1-24ch) > are needed. Are there any * users that use or forsee using 72+ VGC to the > PSTN? > > I know in at least one or two markets the monthly cost of 2 A-links is closer > to $1800/month. I cannot verify any of the other costs in the model above, > but they seem about right. > > Can anyone provide a similar PRI versus SS7/IMT cost model for any other > parts of the world? > > [1] http://www.tmcnet.com/articles/ctimag/0998/featureBay.htm > > TIA,
It may be just a difference in my experience, but this article you quote seems heavily flawed. It is claiming that the SS7 links would allow you to use a T1 as if it where a PRI, and the difference in cost between a T1 and a PRI would save you money in the long run. The numbers they quote are just about reveresed from the reality I've dealt with over the last year. At least in TN, I can get a PRI for less than a full deployed T1. Oddly enough it mostly has to do with taxes, and it seems in TN you pay taxes per line turned up on the T1, but you get a bulk discount on the PRI. I mention this being TN as we are known for having screwed the telco in what the PSC would allow them to charge. Current quote for a PRI here that we just had turned up today ended up bing ~$750 a month after taxes and all. Our T1 that we are turning off is running us ~$950 a month. Also it falsely claims that callerid can not be transported from PSTN to VoIP or from VoIP to PSTN. Asterisk does it just fine, and so does some of the other VoIP providers. The article seems to only talk about dial up modem users. As soon as there is maybe 1 or 2 more broadband options available, there will not be much use for modem connections as the prices should start dropping to the point of making the dial up only useable for network backwaters. We aren't there yet, but we will get there faster than ss7 will be usable for what this article says. On Fri, 2003-05-23 at 11:33, Mike M wrote:> Hello. I am new to this forum. If this issue has been discussed already, > please inform me, but my STFW have indicated that it has not. > > If SS7 were available on * would it make commercial sense to use it? There > are case studies on the web (courtesy of the Death Star :->) for ISPs with > 10,000+ subscriber lines showing clear cost savings in transitioning from PRI > to SS7 controlled IMT. My question is focused on * and its users. More > detail might help. The discussion below assumes a North American PSTN and US > currency. > > If a * user connects to the PSTN with a PRI it will cost $900/month (in 1998 > according to [1]). An equivalent connection with SS7/IMT is $3000/month > ($2500 for two SS7 A-links and one or two route sets and $500 for the IMT). > The SS7/IMT method becomes a better deal when more than 72 VGC (3 x T1-24ch) > are needed. Are there any * users that use or forsee using 72+ VGC to the > PSTN? > > I know in at least one or two markets the monthly cost of 2 A-links is closer > to $1800/month. I cannot verify any of the other costs in the model above, > but they seem about right. > > Can anyone provide a similar PRI versus SS7/IMT cost model for any other > parts of the world? > > [1] http://www.tmcnet.com/articles/ctimag/0998/featureBay.htm > > TIA,-- Steven Critchfield <critch@basesys.com>
On Friday 23 May 2003 12:56, Hemant Kumar wrote:> I think with IAX2 and TDMoE it is not worth the effort to think about SS7.SS7 is used to setup calls between switches in the PSTN - the so-called trunk-side connection to a switch. PRI is a line-side connection to the PSTN. TDMoE is for scaling * to multilpe boxes. IAX2 - similar? May be good for distributing multiple *box across a wide geographic area? I did a quick read on these protocols, but one thing is certain - they will not get you connected to the PSTN. If you do not want to connect to the PSTN then SS7 should not be on your radar.> > Hemant > > P.S: This was told to me by a carrier who is already covering a-z > countries. > > ----- Original Message ----- > From: "Mike M" <linux-support@earthlink.net> > To: <Asterisk-Users@lists.digium.com> > Sent: Friday, May 23, 2003 10:03 PM > Subject: [Asterisk-Users] Who would use Asterisk SS7? > > > Hello. I am new to this forum. If this issue has been discussed > > already, please inform me, but my STFW have indicated that it has not. > > > > If SS7 were available on * would it make commercial sense to use it? > > There > > > are case studies on the web (courtesy of the Death Star :->) for ISPs > > with 10,000+ subscriber lines showing clear cost savings in transitioning > > from > > PRI > > > to SS7 controlled IMT. My question is focused on * and its users. More > > detail might help. The discussion below assumes a North American PSTN > > and > > US > > > currency. > > > > If a * user connects to the PSTN with a PRI it will cost $900/month (in > > 1998 > > > according to [1]). An equivalent connection with SS7/IMT is $3000/month > > ($2500 for two SS7 A-links and one or two route sets and $500 for the > > IMT). > > > The SS7/IMT method becomes a better deal when more than 72 VGC (3 x > > T1-24ch) > > > are needed. Are there any * users that use or forsee using 72+ VGC to > > the PSTN? > > > > I know in at least one or two markets the monthly cost of 2 A-links is > > closer > > > to $1800/month. I cannot verify any of the other costs in the model > > above, > > > but they seem about right. > > > > Can anyone provide a similar PRI versus SS7/IMT cost model for any other > > parts of the world? > > > > [1] http://www.tmcnet.com/articles/ctimag/0998/featureBay.htm > > > > TIA, > > -- > > Mike M. > > _______________________________________________ > > Asterisk-Users mailing list > > Asterisk-Users@lists.digium.com > > http://lists.digium.com/mailman/listinfo/asterisk-users > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users-- Mike M.
Yeah am sorry to write the half fact. But I just thought you are familiar with Zap hardware. For PSTN you can use Zap Hardware like T/E/400P/100P. Zap driver is also pretty much stable. I am using the same in a call center and having PD,ACD and most of the funtionality you have read about CTI Hardware. Now, if you are really interested in SS7 on *, then talk to www.openss7.com guys. They have claimed to develope SS7 enabled driver for T/E400P card. Hemant ----- Original Message ----- From: "Mike M" <linux-support@earthlink.net> To: <asterisk-users@lists.digium.com> Sent: Saturday, May 24, 2003 3:31 AM Subject: Re: [Asterisk-Users] Who would use Asterisk SS7?> On Friday 23 May 2003 12:56, Hemant Kumar wrote: > > I think with IAX2 and TDMoE it is not worth the effort to think aboutSS7.> > SS7 is used to setup calls between switches in the PSTN - the so-called > trunk-side connection to a switch. PRI is a line-side connection to thePSTN.> > TDMoE is for scaling * to multilpe boxes. IAX2 - similar? May be goodfor> distributing multiple *box across a wide geographic area? I did a quickread> on these protocols, but one thing is certain - they will not get you > connected to the PSTN. If you do not want to connect to the PSTN then SS7 > should not be on your radar. > > > > > Hemant > > > > P.S: This was told to me by a carrier who is already covering a-z > > countries. > > > > ----- Original Message ----- > > From: "Mike M" <linux-support@earthlink.net> > > To: <Asterisk-Users@lists.digium.com> > > Sent: Friday, May 23, 2003 10:03 PM > > Subject: [Asterisk-Users] Who would use Asterisk SS7? > > > > > Hello. I am new to this forum. If this issue has been discussed > > > already, please inform me, but my STFW have indicated that it has not. > > > > > > If SS7 were available on * would it make commercial sense to use it? > > > > There > > > > > are case studies on the web (courtesy of the Death Star :->) for ISPs > > > with 10,000+ subscriber lines showing clear cost savings intransitioning> > > from > > > > PRI > > > > > to SS7 controlled IMT. My question is focused on * and its users.More> > > detail might help. The discussion below assumes a North American PSTN > > > and > > > > US > > > > > currency. > > > > > > If a * user connects to the PSTN with a PRI it will cost $900/month(in> > > > 1998 > > > > > according to [1]). An equivalent connection with SS7/IMT is$3000/month> > > ($2500 for two SS7 A-links and one or two route sets and $500 for the > > > > IMT). > > > > > The SS7/IMT method becomes a better deal when more than 72 VGC (3 x > > > > T1-24ch) > > > > > are needed. Are there any * users that use or forsee using 72+ VGC to > > > the PSTN? > > > > > > I know in at least one or two markets the monthly cost of 2 A-links is > > > > closer > > > > > to $1800/month. I cannot verify any of the other costs in the model > > > > above, > > > > > but they seem about right. > > > > > > Can anyone provide a similar PRI versus SS7/IMT cost model for anyother> > > parts of the world? > > > > > > [1] http://www.tmcnet.com/articles/ctimag/0998/featureBay.htm > > > > > > TIA, > > > -- > > > Mike M. > > > _______________________________________________ > > > Asterisk-Users mailing list > > > Asterisk-Users@lists.digium.com > > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > _______________________________________________ > > Asterisk-Users mailing list > > Asterisk-Users@lists.digium.com > > http://lists.digium.com/mailman/listinfo/asterisk-users > > -- > Mike M. > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > > >