Linksys SPA8000 есть какой нибудь способ сбросить настройки? (IVR - не работатет)

На сайте linksys.com есть мануал по нему вот цитата

5.How do I access the Linksys ATA if I forget my password?
By default, the User and Admin accounts have no password. If the ITSP set the password for either account and you do not know what it is, you need to contact the ITSP. If the password for the user account was configured after you received the Linksys ATA, you can reset the device to the user factory default, which preserves any provisioning completed by the ITSP. If the Admin account needs to be reset, you have to perform a full factory reset, which also erases any provisioning.
To reset the Linksys ATA to the factory defaults, perform the following steps:
A.Connect an analog phone to the Linksys ATA and access the IVR by pressing ****.
B.Press the appropriate code to reset the unit:
•Press 877778# to reset the unit to the defaults as it shipped from the ITSP. This will reset the User account password to the default of blank. •Press 73738# to perform a full reset of unit to the defaults as it shipped from Linksys. This will reset the Admin account password to the default of blank.
C.Press 1 to confirm the operation.
Press * to cancel the operation.
D.Login to the unit using the User or Admin account without a password and reconfigure the unit as necessary.