Linksys-Cisco 3102


General Description

The SPA3102 features the ability to connect standard telephones and fax machines to IP-based data networks with the additional benefit of an integrated connection for legacy telephone network "hop-on, hop-off" applications. SPA3102 users will be able to leverage their broadband phone service more than ever by automatically routing local calls from mobile phones and land lines over to VoIP service providers and vice versa. If power is lost to the unit or Internet service is down, calls can be redirected to a traditional carrier via the FXO interface.

A user calling from a mobile phone or land line will be able to reduce and even eliminate international and long distance telephone charges by first calling their SPA3102 via a local telephone number. The advanced authentication and call routing intelligence programmed into the SPA3102 will route the call via the Internet to the far end destination. In addition, when using the SPA3102 at the far end, VoIP calls placed to that location can be either answered or further processed and routed on as a local call to any legacy land line or mobile phone.

The SPA3102 supports one RJ-11 POTS (Plain Old Telephone Service) FXS port to connect an existing analog phone or fax machine. The SPA3102 also supports one PSTN FXO port to connect to a Telco or PBX circuit. The SPA3102 includes 2 100BaseT RJ-45 Ethernet interfaces to connect to a home or office LAN, as well as an Ethernet connection to a broadband modem or router. The SPA3102 FXS and FXO lines can be independently configured via software controlled by the service provider or the end user.

Installed by the end user and remotely provisioned, configured and maintained by the service provider, each SPA3102 converts voice traffic into data packets for transmission over an IP network. Compact in design, the SPA3102 can be used in consumer and business VoIP service offerings including a full-featured IP Centrex environment. The SPA3102 uses international standards for voice and data networking for reliable voice and fax operation.


Toll Quality Voice and Carrier-Grade Feature Support

The SPA3102 delivers clear, high-quality voice communication in diverse network conditions. Excellent voice quality in a demanding IP network is consistently achieved via our advanced implementation of standard voice coding algorithms. The SPA3102 is interoperable with common telephony equipment like voicemail, Fax, PBX, and interactive voice response systems.

Large-Scale Deployment and Management

The SPA3102 offers all the key features and capabilities which service providers can provide customized VoIP services to their subscribers. The SPA3102 can be remotely provisioned and supports dynamic, in-service software upgrades. A secure profile upload saves providers the time, expense, and hassle of managing and pre-configuring or re-configuring customer premise equipment (CPE) for deployment.

Ironclad Security

Linksys understands that security for end users and service providers is a fundamental requirement for a solid, carrier-grade telephony service. The SPA3102 supports secure, standard encryption-based methods for communication, provisioning and servicing.

Features at a Glance


  • Service Authentication via PIN, Digest, Caller ID (Bellcore Type 1)
  • Per Call Authentication and Associated Routing
  • Least Cost Routing Support
  • Impedance Agnostics - 8 Settings
  • Call Waiting, Cancel Call Waiting, Call Waiting Caller ID Detection (Bellcore Type 1)
  • Caller ID with Name/Number (Multi-national Variants)
  • Caller ID Blocking
  • Call Forwarding to PSTN or VoIP Service: No answer, Busy, All
  • Do Not Disturb
  • Call Transfer
  • Three-way Conference Calling with Local Mixing
  • Message Waiting Indication - Visual and Tone Based
  • Call Return
  • Call Back on Busy
  • Call Blocking with Toll Restriction
  • Delayed Disconnect
  • Distinctive Ringing - Calling and Called Number
  • Off-hook Warning Tone
  • Selective/Anonymous Call Rejection
  • Hot line and Warm Line Calling
  • Speed Dialing of 8 Numbers/Addresses
  • Music on Hold
  • Fax: G.711 Pass Through or Real Time Fax over IP via T.38

Product Specific (SPA3102)

  • VoIP to PSTN (USA) Service Call Origination and Termination
  • PSTN (USA) to VoIP Service Call Origination and Termination
  • Single Stage and Two Stage Dialing
  • Forward Calls to VoIP service - Selective, Authenticated, All
  • Forward Calls to PSTN service - Selective, Authenticated, All
  • PSTN Line Sharing with Multiple Extensions
  • Automatic PSTN Fallback (Loss of Power or IP Service to Unit - with Quiescence to Normal Operations)
  • Advanced Inbound and Outbound Call Routing
  • Independent Configurable Dial Plans - Up to 8
  • Force PSTN Disconnection
  • Sequential Dialing Support

VoIP to PSTN Authentication and Routing Features

  • VoIP to PSTN Gateway Enable/Disable
  • VoIP Caller Auth Method (None, PIN, HTTP Digest)
  • VoIP PIN Max Retry Setting
  • One Stage Dialing Enable/Disable
  • VoIP Caller ID Pattern Matching
  • VoIP Access Allowed Caller List (No Further Authentication)
  • VoIP Caller PIN and Associated Dial Plan

PSTN to VoIP Authentication and Features

  • PSTN to VoIP Gateway Enable/Disable
  • VoIP Caller Auth Method (None, PIN, HTTP Digest)
  • Ring Through to FXS Enable/Disable
  • Ring Through Tone - Configurable
  • Caller ID (Bellcore Type 1) for VoIP Service Access
  • Caller ID Enable/Disable
  • PIN Max Retry Settings
  • Access Allowed Caller List (No Further Authentication)
  • Caller PIN and Associated Dial Plan
  • Least Cost Routing (via Outbound VoIP - Line1 Dial Plan)

FXO Behavior Features

  • VoIP Answer Delay Timer
  • PSTN Answer Delay Timer
  • VoIP PIN Digit Time-Out Timer
  • PSTN PIN Digit Time-Out Timer
  • PSTN-to-VoIP Call Max Dur Timer
  • VoIP-to PSTN Call Max Dur Timer
  • PSTN Ring Through Delay Timer
  • PSTN Dialing Delay Timer
  • VoIP DIG Refresh Interval Timer
  • PSTN Ring Time-out Timer

PSTN Disconnection Detection Features

  • CPC (Removal of Tip/Ring Voltage Momentarily)
  • Polarity Reversal
  • Long Silence (Configurable Time Setting)
  • Disconnect Tone (e.g. Reorder Tone)
  • Silence Threshold

International Control Features

  • FXO Port Impedance - Configurable to 16 settings
  • Ring Frequency - Configurable
  • SPA to PSTN and PSTN to SPA Gain Settings
  • Ring Frequency - Maximum Setting
  • Ring Validation Time Setting
  • Tip/Ring Voltage Adjustment Setting
  • Ring Indication Delay Setting
  • Operational Loop Current Minimum Value
  • Ring Time-out Setting
  • On-Hook Speed Setting
  • Ringer Impedance Setting
  • Line-in-Use Voltage Setting


How do I connect the SPA to my existing ISP-deliverd router?

  • Connect the Line- to the POTS outlet of the splitter
  • connect your voice home-telephone-system to the phone outlet
  • connect the one of the ISP-delivered router RJE45 outlet to the Internet-connector of the SPA
  • leave the Ethetnet SPA empty
You can only review the admin page of the SPA via the Internet connector and even only if web-enabled.

I cannot see the configuration page AND connect to the internet at the same time...

If you are lose on the configuration page, then you can access the configuration settings by the phone configuration menu (press 4 x *); 'remember to remove the LINE connection, just leave the PHONE connection to the analog phone to enter the voice configuration menu!'
  • factory reset the modem: 73738# (1#-save)- hangup
  • enable web-based utility: 7932# (1# -save)
  • set internet connection type - static: 101# 1- DHCP or 2- Static# (1#-save)
  • Set static IP address: 111# enter the ip-number in your range eg.192*168*1*48# (1#-save)
You will encounter several reboots of the SPA; but after this you can review the SPA confuguration menu and the web both.

I cannot enter the web configuration through the internet port

  • Connect the LAN cable to the Ethernet port because most probably the WEB server is disabled from the Internet port
  • Enter the web configurator using a web browser, specifying the LAN address of the SPA-3102 (normally, login as administrator -> advanced -> Router -> Wan Setup -> Enable WAN Web Serve: yes
In this way the web configurator will answer you to the internet port too.


Go to to download the newest firmware.

Old firmware version spa3102-5-1-7.bin is available on linskys website. Linksys Website
Firmware Date on Website 4/03/2006, Actual date on Firmware 3/13/2007, - mbrown *

For newer versions of the firmware, you can upgrade the device from a non-Windows machine by putting the firmware file on a webserver (presumably an internal webserver on your LAN), and loading a specially formed link in your browser.

This will cause the SPA3102 to retrieve the file and update its firmware with it.

Outstanding Bugs

Bugs here are outstanding with current firmware release. ALL new bugs must be intitially posted as "unconfirmed". If you can validate an unconfirmed bug and you did not create the initial post, please change unconfirmed to "confirmed".

Power LED is flashing orange I unable to connect web interface, or ping or get any IVR. All I want to do is to reset the firmware to factory reset and enter the configuration.
This problem also described here

MAJOR bugs are bugs which fall short of documented or described operation and have no workaround. MINOR bugs are like MAJOR, but have a workaround. TWEAK bugs are when the phone operates in a way that is obviously different than one would intuitively expect, but does not hamper the operation. FEATURE REQUESTS are requested new features to improve the phone and are in their own section below.

Fixed Bugs

(Move bugs above here as they get resolved to help keep things uncluttered. Please note which firmware release fixed the bug.)

Feature Requests

Please, only reasonable requests.

It would be nice to let this unit be used with an answering machine too. Here's the general problem:

Here's a suggestion to make it work: by default, the unit is in "dormant mode" regarding PSTN->VoIP. But if it receives a call where the caller hangs up after N rings (configurable), then it switches to the state "the next call I will answer myself and work in PSTN->VoIP mode". Basically this would let you flip the state of the unit via a previous call+hangup. Existing devices use this approach to be controlled by the phone (a hamradio friend of mine uses a gizmo that works that way, to reboot a server on a remote hill, via a phone call). The special call/hangup trick tells the unit that the next call is a "backdoor call" to which it should answer, validate via PIN and/or caller ID, and do the VoIP bridging. This would let me use my cellphone and call my family at home and leave a message on our answering machine or, optionally, make a call and make use of the VoIP bridging instead. Both from the same number (my cellphone), selectable by the caller. The default state should be the "let the PSTN call pass through".

Undocumented Features

Additional Information

Where to purchase.

(List in alphabetical order please)

Created by: dkaufman, Last modification: Thu 26 of Jul, 2012 (10:36 UTC) by motorcicle
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