Panasonic KX-TDE0111 64-Channel VoIP DSP Card DSP6464-Channel VoIP DSP Card (DSP64)16 channel digital signal processor card with four 4 channel IP trunk SHGW4 activation keys (16 total IP trunks) and four 8 channel IP proprietary telephone IPPT8 activation keys pre-installed (32 total IP-PTs)Co..