| Manufacturer | Adtran |
| Manufacturer Part # | 4200305L1 |
| Cost Central Item # | 10131399 |
| Product Description | ADTRAN Atlas 550 - Bridge - ISDN - EN, ISDN, HSSI, Fast EN, Frame Relay |
| Device Type | Bridge |
| Form Factor | External - modular |
| Approximate Dimensions (WxDxH) | 17.1 in x 11.7 in x 3.5 in |
| Data Transfer Rate | 1.544 Mbps |
| Data Link Protocol | Ethernet, ISDN, HSSI, Fast Ethernet, Frame Relay |
| Network / Transport Protocol | TCP/IP |
| Remote Management Protocol | SNMP |
| Digital Signaling Protocol | ISDN PRI, ISDN - 2(NI-2), ISDN 5ESS, ISDN DMS-100, ISDN - 1(NI-1) |
| Data Compression Protocol | IETF PPP LZS |
| Features | IP-routing, manageable |
| Compliant Standards | IEEE 802.3, IEEE 802.3u |
| Power | AC 110/220 V ± 10% ( 50/60 Hz ) |