phoneutils_test: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/phoneutils_test - from package: libphone-utils-dev

You may install the required package with command apt-get install {package}

Error in other languages:
phoneutils_test: bevel nie gevind nie
phoneutils_test: comandă negăsită
phoneutils_test: comando não encontrado
phoneutils_test: commande introuvable
phoneutils_test: command not found
phoneutils_test: käsku ei ole
phoneutils_test: không tìm thấy lệnh
phoneutils_test: komanda nerasta
phoneutils_test: Kommando nicht gefunden.
phoneutils_test: kommandot finns inte
phoneutils_test: komut yok
phoneutils_test: nie znaleziono polecenia
phoneutils_test: níor aimsíodh an t-ordú
phoneutils_test: no se encontró la orden
phoneutils_test: no s'ha trobat l'ordre
phoneutils_test: opdracht niet gevonden
phoneutils_test: parancs nem található
phoneutils_test: perintah tidak ditemukan
phoneutils_test: príkaz nenájdený
phoneutils_test: příkaz nenalezen
phoneutils_test: команда не найдена
phoneutils_test: командата не е открита
phoneutils_test: 命令找不到
phoneutils_test: コマンドが見つかりません