| | Model | Description | Maximum Quantity |
| KXTDA15 |
| Main Board Option Cards | Daughter cards for KX-TDA30 Main Board | KX-TDA3105 | Memory Expansion Card (MEC) | n/a |
| KX-TDA3196 | Remote Card (RMT ) | n/a |
| Trunk Cards | KX-TDA3180 | 4-Port Analogue Trunk Card (LCOT4) | n/a |
| Daughter card for KX-TDA3180 | KX-TDA3193 | 4-Port Caller ID Card (CID4) | n/a |
| KX-TDA3183 | | 2-Port Analogue Trunk Card (LCOT2) | 1 |
| KX-TDA3280 | | 2-Port BRI Card (BRI2) | 1 |
| KX-TDA3283 | | 1-Port BRI Card (BRI1) | 1 |
| KX-TDA3450 | | 4-Channel SIP Trunk Card (SIP-GW4) | 1 |
| Daughter card for KX-TDA3450 | KX-TDA3451 | 4-Channel VoIP DSP Card (SIP-DSP4) | 1 |
| KX-TDA3480 | | 4-Channel VoIP Gateway Card (IP-GW4) | 1 |
| Extension Cards | KX-TDA3171 | | 4-Port Digital Extension Card (DLC4) | n/a |
| KX-TDA3172 | | 8-Port Digital Extension Card (DLC8) | 1 |
| KX-TDA3173 | | 4-Port Single Line Telephone Extension Card (SLC4) | n/a |
| KX-TDA3174 | | 8-Port Single Line Telephone Extension Card (SLC8) | 1 |
| KX-TDA3470 | | 4-Channel VoIP Extension Card (IP-EXT4) | 1 |
| Option Cards | KX-TDA3161 | | 4-Port Doorphone and External Input / Output Card (DPH4) | 1 |
| KX-TDA3162 | | 2-Port Doorphone and External Input / Output Card (for German Type) | 1 |
| KX-TDA3166 | | 8-Channel Echo Canceller Card (ECHO8) | 1 |
| KX-TDA3168 | | Extension Caller ID Card (EXT-CID) | Preinstalled |
| KX-TDA3191 | | 2-Channel Message Card (MSG2)*1 | 2 |
| KX-TDA3192 | | 2-Channel Simple Voice Message Card (SVM2) | 2 |
| DECT Options | KX-TDA0141CE | | 2-Channel Cell Station for DHLC / DLC Card | 2 |
| KX-A272 | | 2-Channel DECT Cell Station Repeater | 6 per base |
| Additional Accessories | KX-TDA3820 | | SD Card -Standard feature Upgrades | 1 |
| KX-TDA3920 | | SD Card -Enhanced feature Upgrades | 1 |
| KX-A244 | | 19" Rack Mounting Bracket | 1 |
| KX-A236 | | Additional AC Adaptor and AC Cord | n/a |
| KX-A228 | | Battery Back-Up Cable | n/a |
| KX-T30865 | | Doorphone | 4 |
| KX-A289 | | KX-TCA256 Transparent Front Carry Case | - |
| KX-A287 | | KX-TCA256 Belt Clip Carry Case | - |
| KX-A288 | | KX-TCA155 Transparent Front Carry Case | - |
| KX-A290 | | KX-TCA355 Belt Clip Carry Case | - |
| CTI Applications | KX-TDA0350 | | PC Phone -1st Party CTI Software / PC Phone Software Add-in for Microsoft® Outlook® | 16 / 16 |
| KX-TDA0300 | | PC Console -Operator Software with system directory capabilities | 12 |
| KX-NCS1100*2 | | Phone Assistant Pro Trial / Express | 7 |
| KX-NCS1101 | | Phone Assistant Pro -1 licence | 128 |
| KX-NCS1105 | | Phone Assistant Pro -5 licences |
| KX-NCS1110 | | Phone Assistant Pro -10 licences |
| KX-NCS1199 | | Phone Assistant Pro -128 licences |
| KX-NCS1200*2 | | Phone Assistant Status Pro Trial / Express*2 | 3 |
| KX-NCS1201 | | Phone Assistant Status Pro (1 licence) | 8 |
| KX-NCS1301*2 | | Phone Assistant Manager*2 | 16 |
| KX-NCS8100 | | IP Softphone | 4 |
| KX-NCS9101 | | IP Softphone Plug-in (KX-NCS1101,1105,1110,1199) | 30 |
