Re: OT: Increasing Cell Phone Signal inside a NOC?
On Wed, Mar 12, 2003 at 04:39:03PM +0200, Petri Helenius scribbled: | | Just call your cell operator customer service and ask for someone who is | able | to talk about coverage issues. | | Practically no cell operator provides access to these people. They take | coverage reports and if you?re lucky, tell you when it?s going to be | fixed. | | And the subway coverage is far from 100%. Might be 100% on the stations. Recent equipment in Asia uses a modified coax along the subway lines to leak EM into the tunnels. 100% reception is expected in most Asian metro/subway lines. That has provided some thought, such as providing 802.11b access on the subways. --
Re: OT: Increasing Cell Phone Signal inside a NOC?
I'm sure a lot of people have the same problem as we are having... Our NOC and Server Equipment is located in No Cell Phone signal zone of our building (It's amazing what metal walls, Server Racks and HVAC Systems will do to Cellphone Signals). I was wondering if anyone out there has found a device that will be able to repeat the Cell Phone signal back into our NOC Server Area's??? You need an LDAP server to fix this ;- Uhm, if your cellphone provider supports call forwarding to another number when the phone is outside of signal range, then you could set up an in-house cordless phone system and everyone could set up their cell to forward to their cordless phone. Talk to any local company selling PBXs and office phone systems for more info on office-wide cordless phone systems. This will work because the transmitters are inside the metal walls and they can be placed to work around obstructions like HVAC or racks. --Michael Dillon P.S. of course, my first answer might have been right too... http://www.innmug.org/information/switchview.html Replace the cordless phone system with 802.11b and VOIP and some LDAP servers and this phoneset http://www.symbol.com/news/pressreleases/press_releases_wirelesslans_vo.html :-)
Re: OT: Increasing Cell Phone Signal inside a NOC?
On Wed, 12 Mar 2003 [EMAIL PROTECTED] wrote: I'm sure a lot of people have the same problem as we are having... Our NOC and Server Equipment is located in No Cell Phone signal zone of our building (It's amazing what metal walls, Server Racks and HVAC Systems will do to Cellphone Signals). I was wondering if anyone out there has found a device that will be able to repeat the Cell Phone signal back into our NOC Server Area's??? You need an LDAP server to fix this ;- :-) One suggestion I haven't seen yet: simply complain. Your cellular service provider may install a new base station in the area if enough people ask them to. Here in Europe, there is 1800 MHz digital service nearly everywhere in and around cities, as long as you're above ground. I haven't encountered a building yet that could kill an otherwise strong signal. It's only when the signal is mediocre to marginal anyway that thick walls will kill it.
Re: OT: Increasing Cell Phone Signal inside a NOC?
On Wed, 12 Mar 2003, Iljitsch van Beijnum wrote: One suggestion I haven't seen yet: simply complain. Your cellular service provider may install a new base station in the area if enough This is very true and sometimes it works. Even for the small customers. I had a problem with Nextel that required Engineering to come to my house and do some site surveys. Nextel determined that had chosen a poor site for one of their towers and they decided to put another tower on the planning board. So sometimes just one person complaining can help. Andrew --- [EMAIL PROTECTED] http://www.andrewsworld.net/ ICQ: 2895251 Cisco Certified Network Associate Learn from the mistakes of others. You won't live long enough to make all of them yourself.
RE: OT: Increasing Cell Phone Signal inside a NOC?
In Finland, it is very usual that cell providers can bring a mini-cell (_not_ a repeater, a real cell) _in_ to the building and wire all floors and especially facilities that are below ground level. In my previous life, I got a cell provider to install an extension to the in-house antenna network to a previously unused area of the basement when we decided to build a new machine room there. Full coverage indeed. :) Well, Helsinki is a city where even the metro system has 100% coverage from all four network operators :) Just call your cell operator customer service and ask for someone who is able to talk about coverage issues. --Kauto
Re: OT: Increasing Cell Phone Signal inside a NOC?
Just call your cell operator customer service and ask for someone who is able to talk about coverage issues. Practically no cell operator provides access to these people. They take coverage reports and if you´re lucky, tell you when it´s going to be fixed. And the subway coverage is far from 100%. Might be 100% on the stations. Pete
RE: OT: Increasing Cell Phone Signal inside a NOC?
Some sort of in-building cell repeater may be sufficient. The gating item, I believe, is whether you can receive adequate cellular coverage outside the building (e.g. on the roof). If so, then a simple repeater should be sufficient. If not, then a wired micro-cell would seem to be required. If signal is adequate up on the roof, then you may be able to construct a purely passive repeater, composed of a high-gain outdoor antenna, some coax, and an appropriate in-door antenna located in your no-signal area. If you want some horsepower, you can consider amplified cellular repeater systems. (Nextel used to install these for customers all the time. But they ONLY covered SMR band!) One example of an active antenna repeater system: http://cellantenna.com/repeater/building_repeater.htm I have yet to locate a dual (or tri) band amplified repeater system. They would be nice, to ensure that both 800 and 1900 bands worked, so ALL cell/PCS phones would just work. If you toss in the SMR bands, then all cellphones AND Nextel would just work. (employees wouldn't be restricted to using just one vendor, or one band.) Also, some 800Mhz-band cellphone companies have purchased additional RF capacity up in the 1900-band. Depending on how the cell companies ultimately use the new spectrum, your employees may not receive minimum call-blocking rates, or may not be able to access cellular data services, unless both 800 and 1900 bands are accessible. Some more links that may be of use: http://www.jl-company.com/Antenna/AmpWilson.html http://www.cellularspecialties.com/PDF%20Datasheets/CSI-610Datasheet_0905.pdf http://www.andrew.com/products/inbuilding/default.aspx Bob
Re: OT: Increasing Cell Phone Signal inside a NOC?
On Tue, 11 Mar 2003 [EMAIL PROTECTED] wrote: I'm sure a lot of people have the same problem as we are having... Our NOC and Server Equipment is located in No Cell Phone signal zone of our building (It's amazing what metal walls, Server Racks and HVAC Systems will do to Cellphone Signals). I was wondering if anyone out there has found a device that will be able to repeat the Cell Phone signal back into our NOC Server Area's??? Well we need a little bit more information. Who is the cellular provider? What modes are you trying to operate the cell in? Just a for instance and to let you know that those systems do exist. For an iden system, Southern LINC sells this: http://www.southernlinc.com/largemultiple.asp Andrew --- [EMAIL PROTECTED] http://www.andrewsworld.net/ ICQ: 2895251 Cisco Certified Network Associate Learn from the mistakes of others. You won't live long enough to make all of them yourself.
Re: OT: Increasing Cell Phone Signal inside a NOC?
[EMAIL PROTECTED] wrote: I'm sure a lot of people have the same problem as we are having... Our NOC and Server Equipment is located in No Cell Phone signal zone of our building (It's amazing what metal walls, Server Racks and HVAC Systems will do to Cellphone Signals). I was wondering if anyone out there has found a device that will be able to repeat the Cell Phone signal back into our NOC Server Area's??? You'd probably need a lot of indoor usage to convince your carrier to do it, but you could ask them to deploy a picocell in your space. For example: http://www.nokia.com/networks/product_catalog/pc_product_highlights/1,5567,,00.html?prod_id=RAS00010path=mcatmcat=5scat=48260 Again, you'd need your cell carrier's cooperation for this. Bradley
