| Interfaces | 10/100 BaseT |
| SIP Session Initiation Protocol, RFC 3261 | Yes |
| Telesis xSIP (eXtended SIP) protocol | Yes |
| FTP (File Transfer Protocol) | Yes |
| Adjunct protocol | Yes |
| XDP (Xymphony Discovery Protocol) | Yes |
| G.711 audio codec | Yes |
| G.723.1 (5.3 and 6.4kbps) audio codec | Yes |
| G.729, G.729AB audio codec | Yes |
| G.711 frame length | 10 to 90msec |
| G.723.1 frame length | 30 to 90msec |
| G.729, G.729AB frame length | 10 to 90msec |
| Silence Suppression (VAD) | Yes |
| Echo Canceler G.168-2002 | Yes |
| QoS (Tos and Diffserv) | Yes |
| T.30 Fax Pass-through over SIP | Yes |
| Integrated SIP registrar | Yes |
| SIP user agents, which can register | 32 |
| Telesis xSIP agents, which can register | 8 |
| IP-TDM gateway channels | 64 |
| Programmable ports / sockets | Yes |
| MD5 authentication | Yes |
| Digest authentication | Yes |
| Audio (voice) encryption | AES-256 |
| IP to TDM gateway capability | Yes |
| TDM to IP gateway capability | Yes |
| SIP supplementary services | Yes |
| Automatic conversation recording for VoIP calls | Yes |
| API (Application Program Interface) | Telesis XApi, TAPI 2.1 |
