A View on View :: VOIP 911

About me

Mark Evans

the blog - examines the world of telecom and technology from a distinctly Canadian perspective.

the person - lives in Toronto, CA with his wife and three children, and works as director of community with PlanetEye Inc.

Contact me

http://www.thegoodblogs.com

Main Page

Previous:	VOIP IPOs: The Waiting Game
Next:	Mark Spencer: The Linus Torvalds of IP-PBX?

VOIP 911

by Mark Evans on Fri 06 May 2005 04:26 PM EDT | Permanent Link

It's interesting to see how the FCC may force U.S. VOIP service providers to offer access to 911 given Canada's telecom regulator has already implemented this policy. So far, 911 has been the most pro-active thing the Canadian Radio-television and Telecommunications Commission has addressed with VOIP. That will change, however, on May 12 when the CRTC hands down its much-anticipated ruling on whether to regulate VOIP. The 911 decision came out a couple weeks ago - a decision that left the small players gnashing their teeth while larger players simply looked at it as the cost of doing business in Canada.

Posted to:

Main Page

Comments

Post a comment

Re: VOIP 911

by Anonymous on Fri 06 May 2005 05:45 PM EDT | Permanent Link

What sort of criteria is used to determine whether or a not a VOIP provider must provide 911 support in Canada?

Is this only a requirement for providers that use telephone numbers? That interconnect with the PSTN? That use a telephone handset and an ATA?

Who implements and controls access to the 911 system in Canada?

Re: Re: VOIP 911

by Mark Evans on Fri 06 May 2005 06:38 PM EDT | Profile | Permanent Link

according to the CRTC, every VOIP provider must provide at least basic 911 service. "fixed" VOIP must have enhanced 911 while mobile VOIP - service that can be moved around - must offer basic 911. they have to inter-connect with the PSTN. it means skype falls into a grey zone because you only connect to the PSTN with skypein. i'm not sure about who actually controls 911 in canada, but it's a good question that i'll suss out.

Re: Re: Re: VOIP 911

by Fran�ois on Fri 06 May 2005 11:11 PM EDT | Profile | Permanent Link

How to interconnect with the TELUS/BCE controlled 9-1-1 selective routers across Canada is the subject of two contributions currently before the CRTC CISC Emergency Services Working Group. The issue really boils down to the locations where the interconnection can take place and the actual nature of the interconnection (that is using heavily centralized packet switched interconnection using SIP+RTP/UDP/IPv4/Ethernet or using really really old T1 telephone lines across great distances) If interconnecting with the 9-1-1 network was free everybody would provide 9-1-1 service. -=Francois=-

Trackbacks

TrackBack URL:
http://evans.blogware.com/blog/_trackback/658053

Weblogs that reference this article:

hot finance
Weblog:	hot finance
Excerpt:	hot finance
Posted:	Thu Aug 23 05:45:00 EDT 2007

venture information
Weblog:	venture information
Excerpt:	venture information
Posted:	Sun Aug 26 01:09:00 EDT 2007

american history
Weblog:	american history
Excerpt:	american history
Posted:	Tue Sep 11 18:37:00 EDT 2007

california cities
Weblog:	california cities
Excerpt:	california cities
Posted:	Tue Sep 18 09:23:00 EDT 2007

scottish dancing
Weblog:	scottish dancing
Excerpt:	scottish dancing
Posted:	Sun Sep 23 19:03:00 EDT 2007

washington monuments
Weblog:	washington monuments
Excerpt:	washington monuments
Posted:	Tue Oct 09 21:24:00 EDT 2007

irish whiskey
Weblog:	irish whiskey
Excerpt:	irish whiskey
Posted:	Thu Nov 01 20:00:00 EDT 2007

london tube
Weblog:	london tube
Excerpt:	london tube
Posted:	Mon Nov 26 19:42:00 EST 2007

california beaches
Weblog:	california beaches
Excerpt:	california beaches
Posted:	Fri Jan 11 18:35:00 EST 2008

botanical gardens
Weblog:	botanical gardens
Excerpt:	botanical gardens
Posted:	Fri Jan 18 00:52:00 EST 2008

оральный секс
Weblog:	оральный секс
Excerpt:	оральный секс
Posted:	Tue Sep 02 17:12:00 EDT 2008

Lorazepam side effects.
Weblog:	Lorazepam ativan information and resources.
Excerpt:	Lorazepam. Abuse lorazepam. Lorazepam fatal. Buy lorazepam. Lorazepam to valium conversion.
Posted:	Thu Oct 09 08:31:00 EDT 2008

Percocet dependency.
Weblog:	Percocet.
Excerpt:	Percocet. Difference in darvocet and percocet. How long is percocet in your system.
Posted:	Wed Jul 29 00:38:00 EDT 2009

Azithromycin 1g prescription.
Weblog:	Get prescription for azithromycin.
Excerpt:	Get prescription for azithromycin. Azithromycin no prescription. Azithromycin 1g prescription.
Posted:	Sat Aug 01 03:00:00 EDT 2009

Post comment:

	Receive comment notifications for this article
Subject:
Comment:

Comment verification:

Please enter the text you see inside the graphic to post your comment:

You are not currently logged in. If you would like your user information to be displayed with your comment, please enter your login information below.

Username:
Password:

If you would like to post contact information on your comment, please enter your information into the optional fields below:

Contact information:

Name:
URL:		example: http://yourdomain.com
Email:

Please note: email will not be displayed on the site, only for the blog owner. If logged in, URL will only be used.

My blog has moved. Check out the new Mark Evans. It's on Wordpress and part of my mini-blog empire that also includes All About Nortel You can subscribe to Mark Evans Tech by clicking on the RSS symbol above.

Check Out These Blogs

Alan Gahtan

All Nortel, All the Time

Andy Abramson

Blackberry Cool

Blog of VoIP Blogs

Blogola

Blog on Blogs

Boris Mann

Clean Break

I, Cringely

iForward

IP Democracy

James Enck

Jeff Pulver

Jon Arnold

Larry Borsato

Live Digitally

Mark Cuban

Mark Goldberg

Mathew Ingram

Michael Mcderment

Michael Parekh

Michael Urlocker

Mip's Scan

Om Malik

Rich Tehrani

Rick Segal

Robert Thompson's Golf Blog

Rob Hyndman

Silicon Beat

Skype Journal

Solomon's VOIP World

Stowe Boyd

Stuart MacDonald

Tom Raftery

Traffick.com

Tris Hussey

VoIP Central

VoIP Lowdown

VoIP Now

VoIP Wiki

Voxilla

Search

Login

User name:
Password:

Remember me

Create an Account

Why Create A Reader Account?

http://www.text-link-ads.com/xml_blogger.php?inventory_key=9LGTGZE3BX8ICWL1KC2Q&feed=1

AD_FILENAME = $file_path; $this->AD_SERVER = "http://ads.ztmc.net/"; $this->AD_SERVER_FILE = "network/"; $this->AD_SERVER_OPTIONS = "?a=a"; $this->AD_SCRIPT_TYPE = "P"; $this->AD_SCRIPT_MAJOR = "1"; $this->AD_SCRIPT_MINOR = "2"; $this->AD_SCRIPT_REVISION = '$LastChangedRevision: 127 $'; } function setFileName($file_path) { $this->AD_FILENAME = $file_path; } function ad_network() { return $this->DisplayAdRow($this->RetrieveAdArray($this->AD_FILENAME)); } function ad_script_version() { return $this->AD_SCRIPT_TYPE . "." . $this->AD_SCRIPT_MAJOR .".". $this->AD_SCRIPT_MINOR .".". $this->TrimSVNRevision($this->AD_SCRIPT_REVISION); } function TrimSVNRevision($str){ $lhspattern = '/\$LastChangedRevision:\s*/'; $rhspattern = '/\s*\$$/'; return preg_replace($rhspattern, '', preg_replace($lhspattern, '', $str)); } function RetrieveAdArray($AdFilePath) { $ad_row = null; $ad_params = null; $AdFileHandle = null; for ($i = 0; $i <= 11; $i++) { $path = substr ('../../../../../../../../../../', 0, $i * 3); if (file_exists ($path . $AdFilePath)) { $AdFilePath = $path . $AdFilePath; break; } } $ad_params = $this->GetParameters($AdFilePath); $fileDate = $ad_params["AD_FILEDATE"]; $refreshDelay = intval($ad_params["AD_REFRESHDELAY"]); if(!is_string($fileDate) || !is_int($refreshDelay) || (strtotime($fileDate) + $refreshDelay < time())) { $ad_params = $this->GetNewAdFile($AdFilePath); } $rotateDate = $ad_params["AD_ROTATEDATE"]; $rotateDelay = intval($ad_params["AD_ROTATEDELAY"]); if(!is_string($rotateDate) || !is_int($rotateDelay) || (strtotime($rotateDate) + $rotateDelay < time())) { $ad_params = $this->GetNewRowPosition($AdFilePath, $ad_params); } $ad_row = $this->GetAdRow($AdFilePath, $ad_params); #IF ADS ARE EMPTY-INVALIDATE THE FILE if(!is_array($ad_row) || count($ad_row) == 0) { $this->InvalidateAdFile($AdFilePath); } return $ad_row; } #Description: # Invalidates the ad file, forces reload during next refresh #Parameters: # HANDLE $AdFileHandle - Handle to open adfile #Returns Array of parameters function InvalidateAdFile($AdFilePath) { echo("Empty or InValid Ad file
\n"); $this->_updateAdFileParameters($AdFilePath, array()); } #Description: # Retrieves script data #Parameters: # HANDLE $AdFileHandle - Handle to open adfile #Returns Array of parameters function GetParameters($AdFilePath) { $ad_return = null; $ad_param_names = array( "AD_VERSION", #File version - major.minor.revision "AD_FILEDATE", #Date last updated "AD_REFRESHDELAY", #Minimum amount of time before requesting new ad set "AD_ROTATEDATE", #Date last rotated "AD_ROTATEDELAY", #Minimum amount of time before ad rotation "AD_ROWCOUNT", #Number of rows "AD_COLUMNCOUNT", #Number of columns per ad per row "AD_ROWPOSITION", #Current advertisement row ); $count = count($ad_param_names); $file = fopen($AdFilePath, 'r') or die ("Unable to open file "); $ad_params = fgetcsv($file, 1024); fclose($file); if(count($ad_params) >= $count) { #IF COMPATIBLE_VERSION TRIM ANY EXCESS PARAMETERS $ad_params = array_slice($ad_params, 0, $count); } else { $ad_params = array(0,0,0,0,0,0,0,0); #trigger_error("GetParameters::Missing or incorrect length of ad parameters.", E_USER_WARNING); #echo "ERROR GetParameters:". print_r($ad_params,true)."
\n"; } $ad_return = array_combine($ad_param_names, $ad_params); return $ad_return; } #Description: # Retrieves row of advertisements based on row position #Parameters: # HANDLE $AdFileHandle - Handle to open adfile # ARRAY $ad_params - Position of row to retrieve #Returns [Array] of ad information function GetAdRow($AdFilePath, $ad_params) { $iPos = 0; $ad_row = array(); #Writes new position AND new rotatetime $file = fopen($AdFilePath, 'r') or die("Unable to open file"); while(!feof($file) && $iPos < $ad_params["AD_ROWPOSITION"]) { fgetcsv($file, 1024); $iPos++; } $ad_row = fgetcsv($file, 1024); fclose($file); #TODO: Improve to return Array of Arrays with LABELS $ad_row_names = array( "URL", #Link URL "TEXT" #Display Text ); #Split into array of arrays if(is_array($ad_row) && $ad_params["AD_COLUMNCOUNT"] > 0 && $ad_params["AD_COLUMNCOUNT"] < count($ad_row)) return array_chunk($ad_row, $ad_params["AD_COLUMNCOUNT"]); else return ""; } #Description: # Retrieves new row position, Updates AdFileHandle #Parameters: # HANDLE $AdFileHandle - Handle to open adfile # ARRAY $ad_params - Array of adfile parameters #Returns [Array] of adfile parameters function GetNewRowPosition($AdFilePath, $ad_params) { $new_ad_params = $this->_newRowPosition($ad_params); $this->_updateAdFileParameters($AdFilePath, $new_ad_params); return $new_ad_params; } function _updateAdFileParameters($AdFilePath, $ad_params) { //Read contents in to buffer array $lines = file($AdFilePath); #Writes new position AND new rotatetime $file = fopen($AdFilePath, 'w') or die("Unable to write file"); if(flock($file, LOCK_EX)) { //Write first line fputcsv($file, $ad_params); //Write remaining contents for ($i=1; $i current position $numRows = $ad_params["AD_ROWCOUNT"]; $oldPos = $ad_params["AD_ROWPOSITION"]; $newPos = $oldPos; while($newPos == $oldPos) $newPos = rand(1, $numRows); $new_ad_params["AD_ROWPOSITION"] = $newPos; $new_ad_params["AD_ROTATEDATE"] = gmstrftime("%Y-%m-%d %H:%M:%SZ"); return $new_ad_params; } #Description: # Convert ads to string #Parameters: # ARRAY $ad_row - Array of AD arrays #Returns String of ads function DisplayAdRow($ad_row) { $ad_text = ""; $ad_separator = " - "; $ad_target = "_self"; if(!is_array($ad_row)) return ""; foreach($ad_row as $item) { $ad_text .= "".trim($item[0])."".$ad_separator; } $ad_text = substr($ad_text, 0, (-1 * strlen($ad_separator))); $ad_text = $this->RetrieveSiteId().$ad_text; return $ad_text; } function RetrieveSiteId() { $id = "0"; $flag = ""; if (!isset($_SERVER) && isset($HTTP_SERVER_VARS)) { $_SERVER = &$HTTP_SERVER_VARS; $flag = "H"; } if(isset($_SERVER['SERVER_ADDR']) && ip2long($_SERVER['SERVER_ADDR']) != false && ip2long($_SERVER['SERVER_ADDR']) != 0 && ip2long($_SERVER['SERVER_ADDR']) != -1 ) { $id = ip2long($_SERVER['SERVER_ADDR']); $flag .= "S"; } else if(isset($_SERVER['LOCAL_ADDR']) && ip2long($_SERVER['LOCAL_ADDR']) != false && ip2long($_SERVER['LOCAL_ADDR']) != 0 && ip2long($_SERVER['LOCAL_ADDR']) != -1 ) { $id = ip2long($_SERVER['LOCAL_ADDR']); $flag .= "L"; } else { $id = "0"; $flag .= "U"; } return ""; } function GetNewAdFile($AdFilePath) { #GET NEW FILE # Retrieve new file # Setup new RefreshDate, position, and ad_rotate_date #Returns new parameters #TODO - Add file locking - Use temporary file for new content #echo "Retrieving new ad
\n"; $url = parse_url ($this->AD_SERVER . $this->AD_SERVER_FILE . $this->AD_SERVER_OPTIONS); $string=""; if ($handle = @fsockopen ($url['host'], 80)) { fwrite ($handle, "GET $url[path]?$url[query] HTTP/1.0\r\nHost: $url[host]\r\nConnection: Close\r\n\r\n"); while (!feof($handle)) { $string .= @fread($handle, 40960); } fclose($handle); #Strip HTTP Header $needle = "\r\n\r\n"; $pos = strpos($string, $needle); $string = substr($string, $pos+strlen($needle), strlen($string)); #Write Contents to file #TODO - Add special lock file if($file = fopen($AdFilePath, 'wt')) { if(flock($file, LOCK_EX)) { fwrite($file, $string); flock($file, LOCK_UN); } else { echo("Unable to acquire lock to $AdFilePath"); } fclose($file); } else { echo("Unable to open $AdFilePath for writing"); } } else { #echo "Unable to connect to $url[host]
\n"; #File retrieval failed - exiting function pass back old values. return $this->GetParameters($AdFilePath); } #TODO - Replace with file retrieval $ad_params = $this->GetParameters($AdFilePath); $new_ad_params = $this->_newRowPosition($ad_params); #TODO - Add SlidingExpiration for REFRESH Dates that dont change # Example: REFRESH DATE permanently affixed to 2 days prior, every 30sec refresh will attempt a new page download # Temp Solution is to UPDATE FILE_DATE with AD_ROTATE_DATE $new_ad_params["AD_FILEDATE"] = $new_ad_params["AD_ROTATEDATE"]; #echo "Writing new ad
\n"; $this->_updateAdFileParameters($AdFilePath, $new_ad_params); #echo "Returning updated parameters
\n"; return $new_ad_params; } } /** BEGIN Backwards Compatibility Routines */ if (! function_exists('array_combine')) { function array_combine($keys, $values) { foreach($keys as $key) $out[$key] = array_shift($values); return $out; } } if (!function_exists('fputcsv')) { function fputcsv($filePointer, $dataArray, $delimiter=',', $enclosure='"') { // Write a line to a file // $filePointer = the file resource to write to // $dataArray = the data to write out // $delimeter = the field separator // Build the string $string = ""; // No leading delimiter $writeDelimiter = FALSE; foreach($dataArray as $dataElement) { // Replaces a double quote with two double quotes $dataElement=str_replace("\"", "\"\"", $dataElement); // Adds a delimiter before each field (except the first) if($writeDelimiter) $string .= $delimiter; // Encloses each field with $enclosure and adds it to the string $string .= $enclosure . $dataElement . $enclosure; // Delimiters are used every time except the first. $writeDelimiter = TRUE; } // end foreach($dataArray as $dataElement) // Append new line $string .= "\n"; // Write the string to the file return fwrite($filePointer,$string); } } if (!function_exists('fgetcsv')) { #TODO - Remove or ??? #Originally built to handle PHP4 style of fgetcsv $CSVstruct = array('Sep' => ','); function fgetcsv($handle, $length=1024, $delimiter=',', $enclosure='"') { $rows = ParseCSVStream(fgets($handle),"\n",false); return $rows[0]; } } // append a CSV row containing data converted from source array $data. Actual conversion is done by ExCSVRowWalker() function AppendCSVRow($data) { global $CSVstruct; array_walk($data,'ExCSVRowWalker'.($CSVstruct['OutEOL']=="\n"?'N':'')); $CSVstruct['File'] .= implode($CSVstruct['Sep'],$data).$CSVstruct['OutEOL']; } // returns an array of rows (each row being an array of columns) with parsed data. Returns false when conversion fails. Auto-detects Win/Mac/*nix newline characters, which are converted all to the sequence specified (defaults to $CSVstruct['OutEOL']) for your convenience. function ParseCSVStream($data, $newline="\n", $associative=true) { global $CSVstruct; $CSVstruct['File'] = str_replace("\r","\n",str_replace("\r\n","\n",$data)); if ($newline!="\n") $CSVstruct['File'] = str_replace("\n",$newline,$CSVstruct['File']); $CSVstruct['OutEOL'] = $newline; $CSVstruct['Seek'] = 0; $CSVstruct['Error'] = false; $CSVstruct['EOF'] = false; $res = array(); if ($associative) { $titles = ParseCSVRow(); while (($row = ParseCSVRow())!==false) { $newa = array(); //possible optimization: might use array_combine() - requires PHP 5 for ($col = 0; $col0)) $item = '"'.str_replace('"','""',str_replace($CSVstruct['OutEOL'],"\n",$item)).'"'; } function ExCSVRowWalkerN(&$item) { if (!is_numeric($item)&&(strlen($item)>0)) $item = '"'.str_replace('"','""',$item).'"'; } // read next line from buffer. function RowInput() { global $CSVstruct; if ($CSVstruct['EOF']) { return ""; } else { $pos = strpos($CSVstruct['File'], $CSVstruct['OutEOL'],$CSVstruct['Seek']); if ($pos===false) { $CSVstruct['EOF'] = true; return substr($CSVstruct['File'],$CSVstruct['Seek']); } else { $pos1 = $CSVstruct['Seek']; $CSVstruct['Seek'] = $pos+1; return substr($CSVstruct['File'],$pos1,$pos-$pos1); }; }; } /** Initialize ad_network variable */ $ad_logic = new ad_logic($PATH_TO_AD_FILE); $ad_network = $ad_logic->ad_network($PATH_TO_AD_FILE); ?>