ao-telem: 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/ao-telem - from package: altos

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

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