Usando el IVR para volver el PAP2 a factory default: ****73738#
si te pide un password puedes usar los siguientes:
8995523#
7756112#
5465866#
50274537#
78196365#

Una vez que te haya aceptado cualquiera de estos passwords presiona 1 para confirmar y # para finalizar

Utiliza nuevamente el IVR y pulsa ****110# para que te indique la dirección IP del PAP2 ahora sin clave, para ingresar via web http://x.x.x.x/admin/advance

Saludos
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Linksys PAP2 Useful Tips
This article was written as a quick reference guide designed to help you get more out of your Linksys PAP2 VoIP Adapter. Content is somewhat limited at the moment due to time constraints however I plan on adding to this page in the coming months.


PAP2 Factory Reset
WARNING! If you're using an unlocked PAP2 previously supplied by Vonage, your adapter will revert back to the settings from the factory after resetting and will immediately attempt to 'phone home', re-provisioning itself from Vonage! If you'd like to reset your PAP2 then re-unlock it, make sure that you disconnect it from the Internet prior to performing a factory reset!

Resetting your PAP2 to its factory default settings (often referred to as a 'hard reset') is done via the built-in IVR (Interactive Voice Response) menu. To access the IVR, simply pick up a telephone that is connected to the PAP2 and dial:

* * * *

(yep, 4 stars) This will activate the IVR 'Configuration Menu' (you'll hear a voice tell you this) after which point, simply press the following sequence of keys to 'factory reset' your PAP2:

7 3 7 3 8 #

Funnily enough, the above key sequence spells 'R E S E T', followed by a #. You'll be asked to confirm your selection - simply press 1 to continue. That's it. 

PAP2 Speed Dial
The PAP2 has provision for 8 'speed dial' numbers or SIP addresses. In the PAP2s web-based administration pages, they're numbered 2 thru 9 (with number 1 seemingly inaccessible - hence 8 'useful' memory slots). The speed dial settings can be programmed either via a telephone connected to the PAP2 (IVR), or via the PAP2 web-based administration pages.

Method 1 (IVR): Programming the speed dial via a PAP2-connected telephone
Step 1: The Linksys PAP2 has provision for two telephone lines and each line can hold up to 8 speed dial numbers. To program a speed dial on line one, pick up a phone connected to line one and dial *74. You should immediately hear a steady tone at which point you should assign the speed dial memory number (i.e., any number between 2 and 9 inclusive). After assigning the memory number, you should immediately hear the same steady tone and at this point, enter the full telephone number that you'd like to program (area code and number). I should mention that the way in which you program your speed dial number will vary depending on your dial plan. As a general rule, if you're dial plan allows for standard North American dialing, simply dial 1 followed by the area code and number. If you're programming an international number, dial 011 then the country code, area code and number.

For example, to program (416)555-1212 into speed dial slot number 2 on line one, do the following:

Pick up line one and dial *74
You should immediately hear a steady tone at which point, press 2 (the memory slot into which we want to program our speed dial number)
dial 14165551212
That's it! 
Step 2: To dial the speed dial number that you programmed in step 1, simply press the single digit memory slot assigned to that number, followed by the # key. For example, to dial the example number from step one (416-555-1212), dial 2# (the memory slot assigned to that number, followed by the # button)
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http://www.geocities.com/unlockpap2/
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Comandos IVR Linksys PAP2 

Tecleando **** en un teléfono conectado al PAP2, tenga este o no conectividad con Peoplecall, se accede al menú IVR del adaptador.

100# -> Da el estado de DHCP, si está activo (1) ó desactivado (0).

101# -> Cambia el estado de DHCP (1 activa ó 0 desactiva).

110# -> Nos dice en inglés la Ip del PAP2 (Fijada o obtenida por DHCP).

111# -> Asigna una ip fija al PAP2.

120# -> Nos dice la máscara de Subred que tiene el PAP2. 

121# -> Fija la máscara de Subred. Similar al procedimiento de establecer ip fija.

130# -> Nos dice el GW por defecto del PAP2.

131# -> Establece la puerta de enlace por defecto. Gateway.

150# -> Nos dice la versión de firmware que posee el PAP2.

73738# -> Reset total del dispositivo.