An outbound call to "%1" couldn't be established because the UM IP gateway that UM attempted to use for this call, "%2", ...

An outbound call to "%1" couldn't be established because the UM IP gateway that UM attempted to use for this call, "%2", returned the error "%3". The caller ID used for this call was "%4". For help troubleshooting the error code, contact the vendors who support your IP gateway. Additional information: %5.