CISCO SPA112/122

How to set up Cisco SPA112 and 122 Two Port Phone Adapter

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SPA122 Two-Port Phone Adapter: 2 FXS ports and 1 10/100 WAN port.

Before You Begin

Before you begin the installation, make sure that you have the following Equipment and services:

  • An active Internet account and Voice over IP account with Kiwi Internet
  • Ethernet cable to connect to your broadband modem and this adapter
  • Phone to connect to your SPA112/122
  • Phone cable to connect your phone

Below are detailed instructions on configuring the PAP2T to work with Kiwi Internet:

NOTE: Please make sure you complete this set-up in a timely manner, otherwise when you are saving this set-up it will timeout and all the settings we have inserted will be erased.

It is easy to follow the screen prints rather than the writing. The information in writing has been provided for users to understand what is going on and why particular settings.

1. Get access to your SPA-122/112 web interface

  • Plug in Ethernet cable to router and wait for several seconds
  • Dial ****110#
  • Listen to IP Address which is read back to you
  • Enter IP Address into your web browser (For example.
  • You should now see the Linksys PAP2T Web Interface as below

Username: admin

Password: admin

2. Upgrade firmware (Compulsory)

Visit this link below:

Click on Download Firmware

  • Open the ZIP file in a ZIP utility such as WinZip
  • Click Extract and extract your files to a folder you choose (e.g. C:UsersSupportDesktop) – to your desktop
  • Now, go back to your SPA 112/112 web interface browser: and click on Administration and click on Firmware upgrade followed by attaching the firmware file and click on “Upgrade” as shown below.

3. Configuring SPA 122/112 to work with Kiwi Internet Settings

Note: follow the screen shots and change only the settings as shown in the images as highlighted in red.

  • Click on Voice

Click on SIP

  • Click on the ‘SIP’ tab
  • Change the following SIP Timer Values:
    • Reg Max Expires = 600
    • Reg Retry Intvl = 10
    • Reg Retry Long Intvl = 20

(Changing the above will allow your PAP2T to recover from registration failures more quickly.)

  • Change the following SDP Payload Types:
    • RTP-Start-Loopback-Codec: G711a
  • Change the following NAT Support Parameters (optional):
    • STUN Enable: yes
    • STUN Test Enable: yes
    • STUN Server:

(The STUN settings should be optional. Your PAP2T should work fine without STUN enabled, so you can enable/disable these settings if you are having issues registering.)

Click on Provisioning Tab

You will need have the resync Random Delay to : 3600 (as below)


Configure each of your Lines by clicking on the ‘Line 1′ or ‘Line 2′ tabs

NAT Settings

  • NAT Mapping Enable: Yes
  • NAT Keep Alive Enable: Yes
  • SIP TOS/Diffserv Value: 0×68 (up to your network, this is what Kiwi Internet use)
  • RTP TOS/DiffServ Value: 0×b8 (up to your network, this is what Kiwi Internet use)
  • Sip Transport: UDP (sip settings)
  • Sip Port: 5060 sip settings)

Network Settings parameters:

  • Network Jitter Level: very high

(Setting the jitter level to extremely high will add extra latency to the call but will make the voice quality more reliable over most broadband connections. Unless you believe your internet connection is very stable and does not suffer from high latency or latency variations it is recommended to keep this level extremely high)

* Proxy and Registration Settings:

  • Proxy:
  • Use Outbound Proxy: yes
  • Outbound Proxy:
  • Use OB Proxy In Dialog: yes
  • Register: yes
  • Make call without Reg: yes
  • Register Expires: 300
  • Ans call without Reg: No
  • Use DNS SRV: yes
  • DNS SRV Auto Prefix: no
  • Proxy Fallback Intvl: 3600

* Subscriber Information:

  • Display Name: (e.g. Fred Bloggs or 099749874)
  • User ID: (e.g. 099749874)
  • Password: (e.g. xxxx)
  • Use Auth ID: yes
  • Auth ID: (e.g. 099749874)

* Supplementary Service Subscription settings:

If you choose to leave many of the supplementary services enabled on the PAP2T then the star codes that you use to activate/deactivate services with Kiwi Internet will not work as the PAP2T uses many of the same star codes and will intercept them when you try to dial through to Kiwi Internet. It is therefore recommended that you disable some of the key services such as:

  • Block CID Serv: no
  • Call Waiting Serv: no
  • Block ANC Serv: no
  • Cfwd All Serv: no
  • Cfwd Busy Serv: no
  • Cfwd No Ans Serv: no
  • Cfwd Sel Serv: no
  • Cfwd Last Serv: no
  • Block Last Serv: no
  • Call Redial serv: no
  • Call Back Serv: no
  • Accept Last Serv: no
  • DND Serv: no
  • Call Return Serv: no
  • Secure Call Serv
  • Feature Dial Serv: no
  • Speed Dial Serv: no

* Audio Configuration parameters:

  • Preferred Codec: G711a
  • Silence Supp Enable: no
  • Use Pref Codec Only: no
  • G729a Enable: yes
  • Echo Canc Enable: no
  • Echo Canc Adapt Enable: yes
  • Echo Supp Enable: yes
  • FAX CED Detect Enable: yes
  • FAX CNG Detect Enable: yes
  • FAX Passthru Codec: G711a
  • FAX Codec Symmetric: yes
  • FAX Passthru Method: NSE
  • DTMF Tx Method: AVT
  • DTMF process AVT: no
  • FAX Process NSE: yes
  • FAX Disable ECAN: no

Dial Plan parameters: Below is the recommended dial plan you can use(copy and paste the Dial plan below).

New updated Dial Plan:

  • ([2-9]xxxxxx|0[34679][2-9]xxxxxx|0210xxxxxxx|021[12]xxxxxx|021[3-9]xxxxx|02[0279]xxxxxxx|0204xxxxxxx|0240xxxxxx|024[1-9]xxxxxxx|0282[4-5]xxxxxx|050xxxxxxx|070xxxxxxx|080xxxxxxx|00xxxxxxx.|01[08]|017xx|12[356]|[19]11|*55|023xxxxxxxx|01[1234569]x.|02[56]x.|028[013456789]x.|0282[0123467890]|0282[01236789]|05[1-9]x.|08[1-9]x.|0[34679][0-1]x.|1[03456789]x.|11[023456789]x.|12[0124789]x.|*[012346789]x.|*5[012346789]x.)

Old Dial plan:

  • (0[2-9][2-9]xxxxxx|[2-9]xxxxxx|90[1-8]|02x.|0508x.|0800x.|00x.|1xx|01x|*x.)

Please find the screen print below to follow through easily.

Most other settings are up to you and your preferences. We have only highlighted the ones that are important.

Settings should be saved by clicking on “Submit”

Troubleshooting Tips

If you are having problems connecting to Kiwi Internet or have problems with calls connecting/dropping or one-way audio then you may have a router/firewall device which is ‘interfering’ with the ‘SIP’ traffic causing problems for your phone You can try and use an alternate port number on Kiwi Internet to get around this by changing the following settings in your configuration:

  • SIP Settings
  • SIP Port: 50600
  • Proxy and Registration
  • Proxy:
  • Outbound Proxy:

This will cause the port number used for SIP traffic on both the phone and out to Kiwi Internet to be ‘50600′ instead of ‘5060′ which is often enough to resolve the problems with interfering routers.