| Models | TE100 | |
| E1/T1/J1 Ports (Support PRI, E&M) | 1 | |
| Protocol | SIP (RFC3261) |
| Transport Protocol | UDP, TCP, TLS, SRTP |
| Codec | G.711 (alaw/ulaw), G.722, G.726, G.729A, GSM, ADPCM, Speex |
| Echo Cancellation | ITU-T G.168 LEC Echo Cancellation, Dynamic Jitter Buffer |
| DTMF Mode | RFC2833, SIP Info, In-band |
| Network | DDNS, Firewall, PPPoE, Static IP, QoS, Static Route |
| Network Protocol | FTP, TFTP, HTTP, HTTPS, SSH |
| PRI switch types | Euro ISDN, nation, Q.SIG |
| Caller ID | BELL202, ETSI (V23), NTT (V23-Japan), and DTMF-based CID |
| LAN | 1 10/100Mbps | |
| WAN | 1 10/100Mbps | |
| Power Supply | AC 100-240V (12V 2A) |
| Dimensions (L × W × H) (mm) | 213 x 160 x 44 |
| Operation Range | 0°C to 40°C, 32°F to 104°F; |
| Storage Range | -20°C to 65°C, -4°F to 149°F |
| Humidity | 10-90% non-condensing |