Re: London incidents
Most of the US Carriers have Priority systems setup on the Cell Networks for Government Users. You either enter in a Prefix code on your phone, or your phone's SIM id is registered as a priority user. Spencer Spencer Wood, Network Manager Ohio Department Of Transportation 1320 Arthur E. Adams Drive Columbus, Ohio 43221 E-Mail: [EMAIL PROTECTED] Phone: 614.644.5422/Fax: 614.887.4021/Cell: 614.774.3123 * Sean Donelan [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 07/09/2005 07:05 PM To nanog@merit.edu cc Subject Re: London incidents On Thu, 7 Jul 2005, Gadi Evron wrote: I wonder, has anyone ever prepared a best practices paper of some sort as to what can be expected in cases of big emergencies and mass hysteria, for networks? Yes, there have been several studies and papers about what happens to networks during public emergencies. Look at the FCC NRIC (www.nric.org) and the US National Academies of Science. Unfortunately, in the USA at least, the government is fixated on trying to force a particular solution instead of trying to understand the different problems. Some people think pre-emption is the answer, and have hired numerous consultants to try to push it through any standards group they can find.
OT: NOC Display's
This is kind of off topic, so please feel free to delete if you want grin.. Anyway, in our NOC we current have two LCD projectors displaying outputs from two different computers. On one of the display's, I would like to be able to take 4 VGA outputs from 4 workstations, and display it on the screen (aka: Hollywood square style). Does anyone have any recommendations for an inexpensive device that will take care of this? I have found some nice devices in the 10k price range, which needless to say is a little outside the budget. Security companies sell these devices for Video for around $500, so I'm figure someone should have a VGA version of the device. Thanks! Spencer Spencer Wood, Network Manager Ohio Department Of Transportation 1320 Arthur E. Adams Drive Columbus, Ohio 43221 E-Mail: [EMAIL PROTECTED] Phone: 614.644.5422/Fax: 614.887.4021/Cell: 614.774.3123 *
Re: Voice Compression
g729 Has pretty Decent voice Quality. Each Call is 8k Compressed. G728 is 16k Compressed. Now, these values do not take into account IP Header overhead. VoIP Equipment for 51 DS1's is not going to be cheap. The best bet on the Cisco Side is the 6500 or even a router like the 7200 the with the Voice Card's. Again, not cheap, but it does work pretty well.. Spencer Spencer Wood, Network Manager Ohio Department Of Transportation 1320 Arthur E. Adams Drive Columbus, Ohio 43221 E-Mail: [EMAIL PROTECTED] Phone: 614.644.5422/Fax: 614.887.4021/Pager: 866.591.9954 * Robert White [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 11/13/2003 03:18 PM To [EMAIL PROTECTED] cc Subject Voice Compression I am looking for an economical solution to compress 1248 voice DS-0s to 240 DS0s. My application is to extend the voice and data for a call center that needs roughly 63 T-1 equivalents of bandwidth down 21 physical T-1 ciscuits.
Re: ethernet-based temperature sensors
APC Makes a nice little monitor unit (AP9312TH), List price is $279.00, but you should be able to get them cheaper off the web. If you have APC UPS's on-Site, they also have environmental modules that plug directly into the SmartSlot. Spencer Spencer Wood, Network Manager Ohio Department Of Transportation 1320 Arthur E. Adams Drive Columbus, Ohio 43221 E-Mail: [EMAIL PROTECTED] Phone: 614.644.5422/Fax: 614.887.4021/Pager: 866.591.9954 * matthew zeier [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 09/03/2003 08:17 PM To [EMAIL PROTECTED] cc Subject ethernet-based temperature sensors I know this has been mentioned before, but other than NetBotz (too pricey), what are people use as ethernet-based, SNMP-probable temp sensors? I very simply need to trend temp with cricket/mrtg in various parts of the data center. Looking for real-world experience. Thanks. -- matthew zeier - Curiosity is a willing, a proud, an eager confession of ignorance. - Leonard Rubenstein
Re: Power outage in North East
We are starting to see outages in Akron, Toledo, Medina and Ashland. Spencer Wood, Network Manager Ohio Department Of Transportation 1320 Arthur E. Adams Drive Columbus, Ohio 43221 E-Mail: [EMAIL PROTECTED] Phone: 614.644.5422/Fax: 614.887.4021/Pager: 866.591.9954 * Lee Watterworth [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 08/14/2003 04:44 PM To [EMAIL PROTECTED], [EMAIL PROTECTED] cc [EMAIL PROTECTED] Subject Re: Power outage in North East Ontario Canada is also out. -- Lee Watterworth (lee at rim dot net) Data Network Specialist Research in Motion Ltd +1 519 888 7465 x2610 -Original Message- From: Scott Francis [EMAIL PROTECTED] To: Joel Perez [EMAIL PROTECTED] CC: [EMAIL PROTECTED] [EMAIL PROTECTED] Sent: Thu Aug 14 16:28:21 2003 Subject: Re: Power outage in North East
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??? Any advice would be greatly appreciated! Spencer Spencer Wood, Network Manager Ohio Department Of Transportation 1320 Arthur E. Adams Drive Columbus, Ohio 43221 E-Mail: [EMAIL PROTECTED] Phone: 614.644.5422/Fax: 614.887.4021/Pager: 866.591.9954 *
RE: VoIP QOS best practices
Also note that those sizes are for the voice part of the payload onlyIt does not take into account any payload/packet overhead... We use G.711 quite a bit on our network, and are traffic flows are right around 80k... Spencer Spencer Wood, Network Manager Ohio Department Of Transportation 1320 Arthur E. Adams Drive Columbus, Ohio 43221 E-Mail: [EMAIL PROTECTED] Phone: 614.644.5422/Fax: 614.887.4021/Pager: 866.591.9954 * Ray Burkholder [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 02/10/2003 02:21 PM To: Charles Youse [EMAIL PROTECTED], Alec H. Peterson [EMAIL PROTECTED] cc: [EMAIL PROTECTED] Subject: RE: VoIP QOS best practices G.711 gives you the 64kbps quality you get on a channel in a PRI line. No compression is performed. G.729 is a well accepted codec that performs compression, and with ip packet overhead, uses about 16 to 24 kbps (can't remember which). It gives voice quality very close to G.711. G.723 has a noticeable voice quality change, and is in the 6 to 8 kbps range. The optimal is G.729 for quality vs bandwidth issues. There are some other considerations involved but these are the main ones. Ray Burkholder -Original Message- From: Charles Youse [mailto:[EMAIL PROTECTED]] Sent: February 10, 2003 14:42 To: Alec H. Peterson Cc: [EMAIL PROTECTED] Subject: RE: VoIP QOS best practices Speaking of codecs, what are the primary variables one uses when choosing a codec? I imagine this is some function of how much bandwidth you want to use versus how much CPU to encode the voice stream. C. -Original Message- From: Alec H. Peterson [mailto:[EMAIL PROTECTED]] Sent: Monday, February 10, 2003 1:40 PM To: Bill Woodcock; Charles Youse Cc: [EMAIL PROTECTED] Subject: RE: VoIP QOS best practices --On Monday, February 10, 2003 10:19 -0800 Bill Woodcock [EMAIL PROTECTED] wrote: It works fine on 64k connections, okay on many 9600bps connections. T1 is way more than is necessary. I'd say that largely depends on which codec you are using and how many simultaneous calls you will have going. Alec -- Alec H. Peterson -- [EMAIL PROTECTED] Chief Technology Officer Catbird Networks, http://www.catbird.com
OT: Ameritech/SBC DSL?
I was wondering, does anyone have a good contact at Ameritech/SBC on the DSL side of the house We lost quite a few of our DSL VPN sites earlier this week, and it appears that Ameritech changed there PPPoE authentication method??? Spencer Spencer Wood, Network Manager Ohio Department Of Transportation 1320 Arthur E. Adams Drive Columbus, Ohio 43221 E-Mail: [EMAIL PROTECTED] Phone: 614.644.5422/Fax: 614.887.4021/Pager: 866.591.9954 *
Re: ATT NYC
Here having problem here in Ohio. Spencer Wood, Network Manager Ohio Department Of Transportation 1320 Arthur E. Adams Drive Columbus, Ohio 43221 E-Mail: [EMAIL PROTECTED] Phone: 614.644.5422/Fax: 614.887.4021/Pager: 866.591.9954 * Wes Bachman [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 08/28/2002 03:52 PM To:Bryan Heitman [EMAIL PROTECTED] cc:[EMAIL PROTECTED] Subject:Re: ATT NYC Bryan, There is a known ATT outage in Chicago currently. Could this be effecting you in some way? -Wes On Wed, 2002-08-28 at 14:44, Bryan Heitman wrote: Anyone seeing any problems with ATT in new york? Best regards, Bryan Heitman Interland, Inc. -- Wes Bachman System Network Administration, Software Development Leepfrog Technologies, Inc. [EMAIL PROTECTED]
