bearerbox: 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/sbin/bearerbox - from package: kannel

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

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