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share a Cisco SPA112 configuration file?


Tuly

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I can't remember where the screenshots are :P

But here are the instructions from our wiki. These have worked perfectly for us but we don't use them for faxing, just voice.

 

1. Log into SPA112 (default creds are admin/admin) (to get the IP, plug a phone into port 1 and dial **** and then wait and then dial 110#)

2. Change default password (go to "Administration - User List")

3. Upgrade the firmware ("Administration - Firmware Upgrade" https://software.cisco.com/download/release.html?mdfid=283998771&catid=278875240&softwareid=282463187&release=1.4.1&relind=AVAILABLE&rellifecycle=&reltype=latest (make sure to unzip the file that gets downloaded before you try to upload it to the Cisco device)

4. After firmware upgrade, go to "Voice - Line 1" and then set these credentials:

  Proxy: (this is actually the account realm)
  Outbound Proxy: (insert whatever your outbound proxy server is)
  Use Outbound Proxy: change from "no" to "yes"
  Display Name: (sip username for the device - i.e. "user_xxxxxx")
  User ID: (sip username for the device - i.e. "user_xxxxxx")
  Password: (sip password)

5.. Set the dial plan to the following: (*xxxxxxx|[3469]11|0|00|[2-9]xxxxxx|xxx[2-9]xxxxxxS0|xxxxxxxxxxxx.|**xxxxxxx)

6. Click submit and let the device reboot

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Avoids hackers scanning for open ports that reply, and then sending them harassing traffic where the phone rings randomly with fake Caller IDs like "test" and "100".

Basically it's a protection against crummy firewall/routers that are full cone NAT. See https://en.wikipedia.org/wiki/Network_address_translation for more.

 

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