we are looking at the ability of being able to convert large phone system over to asterisk or if it's possible at all. The building is two sections containing a large office section (with data cabling) and the second section is a hotel with no data cabling. The first section is a no brainer with sip hard and soft phones but the hotel part is where the problem lies. The current count of rooms in the hotel is about 600...that's at a minimum 600 analog connections. Some rooms have 2-3 phones so as a rough number i'm saying 700 total. I see where some people use the Adit 600 to do up to 48 analog connections that trunks over 2 T1 connections back to asterisk but for 700 phones thats 15 Adits with 30 T1's....how in the world would you do that?? just several asterisk servers with 2-3 Adits per server? is there any other way? I'm open to suggestions. Thanks.. Shane
> -----Original Message----- > From: asterisk-users-bounces@lists.digium.com > [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of > shane fowler > Sent: Friday, April 15, 2005 10:10 AM > To: asterisk-users@lists.digium.com > Subject: [Asterisk-Users] large analog to asterisk> 600 analog connections. Some rooms have 2-3 phones so as a > rough number i'm > saying 700 total. I see where some people use the Adit 600 > to do up to 48 > analog connections that trunks over 2 T1 connections back to > asterisk but > for 700 phones thats 15 Adits with 30 T1's....how in the > world would you do > that?? just several asterisk servers with 2-3 Adits per > server? is there > any other way? I'm open to suggestions.Remember that in a hospitality environment, the volume of simultaneous calls is typically quite low, given the number of stations in the system. You could use 600's with the CMG-02 cards to backhaul to asterisk via MGCP. Asterisk's MGCP handling is not as robust as it might be, but it may serve your needs. Another option would be to bank on that high stations:calls ratio. In other words, you'll never need to provide 700 DS0's directly into the PBX. We spec'd a very similar (400 stations) hospitality system recently using a slug of Adtran 624's hanging off of an Adtran 830 equipped with 5 quad T1/PRI cards. Careful planning and dial-plan design can keep most inter-station traffic at the 830, with only those calls requiring trunk or PBX feature access traversing a small number of T1's between the 830 and the PBX (asterisk). -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.9.11 - Release Date: 04/14/2005
As others have already posted about methods to reduce the number of T1s into your Asterisk box, I will look at some other issues, and a differnt angle. On Fri, 2005-04-15 at 12:09 -0500, shane fowler wrote:> we are looking at the ability of being able to convert large phone system > over to asterisk or if it's possible at all. The building is two sections > containing a large office section (with data cabling) and the second section > is a hotel with no data cabling. The first section is a no brainer with sip > hard and soft phones but the hotel part is where the problem lies. > > The current count of rooms in the hotel is about 600...that's at a minimum > 600 analog connections. Some rooms have 2-3 phones so as a rough number i'm > saying 700 total. I see where some people use the Adit 600 to do up to 48 > analog connections that trunks over 2 T1 connections back to asterisk but > for 700 phones thats 15 Adits with 30 T1's....how in the world would you do > that?? just several asterisk servers with 2-3 Adits per server? is there > any other way? I'm open to suggestions.Remember you are dealing with Analog lines here. Most hotel rooms that have 3 or 4 phones, only have 1 "line". They just have multiple extensions of the same line. A hotel room with one phone in the bathroom, one next to the bed, and one on a table, still only needs one DS0 from your Asterisk system. Unless the hotel has a really large cable plant, each room probably hits a wiring closet on it's floor. I would use the channel banks, large UPS, and a decent asterisk server (dual power supply, server quality hardware, mirrored drives) with a Quad T1 card (or two) for that floor. I would then use dual Gig E to connect your system. Probably to two differnt GigE switches, each on different floors of the hotel. A 600 room hotel would have at most 75-100 rooms per floor, which you can easily handle with a single Asterisk server. Per floor, even with your Quad T1 card, you should be looking at $3000-3500 for the server, $1K for the UPS (unless you Ebay the UPS), and then your channel banks. The only issue here will be cooling for the wiring closet. Harry> Thanks.. > > Shane > > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >-- Harry McGregor, Computing Manager Tucson Support Group - U.S. Geological Survey University of Arizona - Environment and Natural Resource Building 520-670-5574 (office) - hmcgregor@espri.arizona.edu 520-661-7875 (Cell) - hmcgregor@usgs.gov The opinions/statements expressed herein are my own and should not be taken as a position, opinion, or endorsement of the University of Arizona or the U.S. Geological Survey.
If your rooms analog phones are wired with cat 3 cabling you can do 10 Mb over it. Convert all the rooms to Ethernet and use large switches. One Asterisk box should do the trick. Remember not every room will be using the phone system at the same time. This should work for you. shane fowler wrote:> we are looking at the ability of being able to convert large phone > system over to asterisk or if it's possible at all. The building is > two sections containing a large office section (with data cabling) and > the second section is a hotel with no data cabling. The first section > is a no brainer with sip hard and soft phones but the hotel part is > where the problem lies. > > The current count of rooms in the hotel is about 600...that's at a > minimum 600 analog connections. Some rooms have 2-3 phones so as a > rough number i'm saying 700 total. I see where some people use the > Adit 600 to do up to 48 analog connections that trunks over 2 T1 > connections back to asterisk but for 700 phones thats 15 Adits with 30 > T1's....how in the world would you do that?? just several asterisk > servers with 2-3 Adits per server? is there any other way? I'm open > to suggestions. > > Thanks.. > > Shane > > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > >
Oh one more thing. There is a 300 foot limit to Ethernet. Also the minimum number of wires is 4. shane fowler wrote:> we are looking at the ability of being able to convert large phone > system over to asterisk or if it's possible at all. The building is > two sections containing a large office section (with data cabling) and > the second section is a hotel with no data cabling. The first section > is a no brainer with sip hard and soft phones but the hotel part is > where the problem lies. > > The current count of rooms in the hotel is about 600...that's at a > minimum 600 analog connections. Some rooms have 2-3 phones so as a > rough number i'm saying 700 total. I see where some people use the > Adit 600 to do up to 48 analog connections that trunks over 2 T1 > connections back to asterisk but for 700 phones thats 15 Adits with 30 > T1's....how in the world would you do that?? just several asterisk > servers with 2-3 Adits per server? is there any other way? I'm open > to suggestions. > > Thanks.. > > Shane > > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > >