"technology"=>"GSM 1800;GSM 900","tower:type"=>"communication"
"technology"=>"GSM 900;UMTS","tower:type"=>"communication"
"technology"=>"GSM 900;UMTS","tower:type"=>"communication"
"technology"=>"GSM 900;UMTS","tower:type"=>"communication"
"technology"=>"GSM 1800;GSM 900;UMTS","tower:type"=>"communication"