Cisco SPA112 - Wiki

Cisco SPA112

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Cisco SPA112
There have been some reports of issues with this device, from both customers of and other providers.
Make sure to install the latest firmware from Cisco Software.
Version 1.1 or later should be used for proper Caller ID support.
Some People have reported issues using Firefox to Configure this device please try Chrome or IE.


Configuration Details

Getting the IP address of your device

Attach the Cisco SPA112 to your network and attach an analog phone to one of the phone ports, then do the following:

Dial **** from the phone, even though there is no dial tone.
When you hear "System Configuration Menu," dial 1 1 0 # slowly. The current IP address will be read back. (e.g. 192.168.X.X)
If you hear, check your network connection and DHCP server. If necessary, a static IP address
can be assigned by using option 111# at the IVR, then entering the IP address with your phone's keypad
(for example, 10*1*27*2 for The network mask can be set with option 121# and the default
gateway can be sent with option 131#
Learn more about the IVR menu options from the document.

Be sure to allow at least a minute or two for the box to initialise; even a correctly configured and installed SPA112/122 will give no power to the 'phone or no dialtone until initialisation is complete.

Note that the SPA122 is basically a SPA112 with a second network port, intended for installation between a local network hub (LAN) and an upstream Internet (WAN) connection. The SPA122 may be configured as either a "NAT" or "bridge". Depending on configuration, this leaves the SPA122 with two addresses; a local area network address (such as and an outside Internet address. Dialling ****110# will give one address, ****210# will give the other.

Accessing to the device's settings page

Open your web browser and go to the IP address you obtained in step 1 (for example, The default username is admin, and the default password is also admin.

For the SPA122, if one address does not return the web interface (or has some functions greyed/disabled), try the other.

Configuring the Quick Setup screen

Go to Quick Setup and configure Line 1 as follows:

Proxy: (You can choose any of our multiple servers)

Display Name: Your name

User ID: 100000 (Replace with your 6 digit Main SIP account UserID or Sub Account user name, i.e. 123456 or 123456_sub)

Password: Your VoIP.MS SIP Password

Dial Plan: (911S0|310xxxx|<:1555>[2-9]xxxxxx|1[2-9]xx[2-9]xxxxxxS0|[2-9]xx[2-9]xxxxxxS0|*xx|***xxx|*xx.|[3468]11|822|0|00|4xxx|**275*x.|xxxxxxxxxxxx.)

(note: Replace 555 in the dial plan with your area code, See Dial Plan for Linksys ATAs for details.)

Click Submit to save settings.

Quick Setup Page - click to enlarge

Configuring the Voice Line

Nat Settings

Click on Voice, then Line 1

Set NAT Mapping Enable to Yes, then set NAT Keep Alive Enable to Yes. If your environment does not use NAT, you can leave these settings disabled. These features can usually be disabled on the SPA122 if it is connected directly to your modem since its traffic will not be subject to NAT in this configuration.

NAT Settings - click to enlarge

Proxy and Registration

Under Proxy and Registration set the server you will use as registration server and the proper values for the register expires and proxy Fallback Intvl:

Proxy: (one of multiple servers, you can choose the one closest to your location.)
Register Expires to 300
Proxy Fallback Intvl to 300

Also confirm the following settings:
DNS SRV Auto Prefix: NO

Proxy and Registration - click to enlarge

Click Submit to submit these changes

Subscriber Information

In this section please confirm that you have the proper account information:

Display Name: Your name (that will be shown as callerID name)
User ID: 100000 (Replace with your 6 digit Main SIP account UserID or Sub Account user name, i.e. 123456 or 123456_sub)
Password: Your SIP Password

Subscriber Information - click to enlarge

Audio Configuration

You can verify or change the audio codec that will be used with the calls. Please verify that you have the same codec selected in your SIP account's settings.

Preferred codec: g711u (or G729)

Audio configuration - click to enlarge

Dial Plan

We recommend to use this dial plan.

Dial Plan - click to enlarge

You can create your own dial plan if you need it, referring to this entry Dial Plan for Linksys ATAs

Optional settings

Outbound audio "breaking up".

Cisco's defaults (SIP T1 = 0.5 sec, RTP packet size 0.030 on most Sipura adapters) respectively may cause unnecessary retransmission of commands over connections with high latency and create issues with outbound audio "breaking up".

Click Voice, then go to SIP.

Set SIP Timer Values (sec)

   SIP T1: 1 

Set RTP Parameters

   RTP Packet Size: 0.02 
   RTP Port Min: 10000 
   RTP Port Max: 20000 

Click Submit to save the changes

SIP Values - click to enlarge

Caller ID display showing incorrect time

Sometimes the hour shown in your caller ID is incorrect. Following this suggestion usually solves the issue:

Enter your device's settings and click Network Setup, then go to Basic Setup, then click Time Settings

Set your time zone and (optional) NTP settings. A good time server choice is Setting the proper time zone will ensure that the time which appears on your Caller ID display is correct.

Click Submit to save the changes

Known Issues

Phone will not ring on handset

Sometimes the Phone you are using is designed for a certain Voltage and Ring Waveform. If someone tries to call you and the phone appears to be ringing for the caller but your phone never rings please follow these steps to hopefully resolve this issue for you.

Step 1: First access the PAP2's web interface.

Step 2: Click on the Admin Login and then click on (switch to advanced view)

Step 3: Click on your Regional Tab on the Top Menu.

Step 4: Go Halfway Down the Page until you see the Heading Ring and Call Waiting Tone Spec

Ring and Call Waiting - click to enlarge

Step 5: Change the Ring Waveform setting to Sinusoid or Trapezoid, the opposite of what you have set. You can also change the Ring Voltage in increments of 5 to 90 or 95.

Step 6: Save Settings and Test an Incoming Call

Receiving Unwanted Calls in the middle of the Night ( i.e. CallerID 100) that do not appear in your CDR:

These calls are not going through our Network but rather through the internet directly to your ATA Device.

Please look under the Voice>> Line 1 page in your SPA device for the following setting: Restrict Source IP and make sure it's enabled.

This way the ATA device will block any traffic not coming from our servers.

Restrict IP - click to enlarge

Firmware Upgrade

SPA112 and SPA122 adapters were distributed with outdated (1.0.x) firmware at least as late as 2012; affected boxes will not show Caller ID on any inbound call, even though the caller names and numbers are visible in the call detail record on the (or other provider's) web interface.

Updated firmware is available from the Cisco site [1] as a .ZIP archive which contains two files (a .BIN with the actual firmware and a .PDF with documentation). Download and unZIP this file. Go to the 'administration' tab on the web interface (on the SPA122, this needs to be done from the LAN side with SPA122's built-in networking set to NAT mode). On the left sidebar, click 'update firmware' (as most of the administration menu does not appear for Firefox users, downgrade to MS IE or another browser temporarily). Click the 'upload' button and indicate the location of the unzipped .BIN file. A box will appear with a progress indicator and a warning not to interrupt the upgrade. When the upgrade is completed, the SPA112/122 will reset and will likely take a minute or more to reinitialize, reconnect to the network and restore dial tone. SPA122 users who have installed the device in-line between the local PCs and the Internet will be disconnected from the Internet until reinitialization is complete.

Once the new firmware is deployed, call display will operate normally and the configuration web page will display in Firefox without missing options in the administration menu.

A manual for Cisco's SPA100 series adapters is online at

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