| Manufacturer | Nortel |
| Manufacturer Part # | NT5S21CAE6 |
| Cost Central Item # | 10125671 |
| Product Description | Nortel Business Services Gateway BSGX4e - Router + 4-port switch - VoIP gateway - Ethernet, Fast Ethernet external |
| Device Type | Router + 4-port switch (integrated) |
| Form Factor | External |
| Approximate Dimensions (WxDxH) | 9.6 in x 7.8 in x 1.3 in |
| Data Transfer Rate | 100 Mbps |
| Data Link Protocol | Ethernet, Fast Ethernet |
| Network / Transport Protocol | TCP/IP, UDP/IP, IPSec |
| Remote Management Protocol | RMON, Telnet, SNMP 2c, HTTP, HTTPS |
| VoIP Functionality | VoIP gateway |
| VoIP Protocols | MGCP, SIP |
| Telephony Interfaces | 1 phone (FXS), 1 line (FXO) |
| Digital Signaling Protocol | MGCP, SIP |
| Features | Firewall protection, switching, IP-routing, NAT support, VLAN support, Syslog support, DoS attack prevention, ALG support, port mirroring, manageable, Intrusion Detection System (IDS), SNTP support, Quality of Service (QoS) |
| Compliant Standards | IEEE 802.1p |
| Power | AC 120/230 V |