Description
Wellfleet Bay Networks 21003 Access Node Communications Server 107913-01
The Wellfleet 21003 is a desktop-form-factor Access Node Communications Server designed for WAN connectivity and serial communications management. It was produced by Wellfleet Communications, which became Bay Networks following the 1994 merger with SynOptics — making this unit searchable under both the Wellfleet and Bay Networks names. The 21003 provides multi-port serial and network access in a compact standalone chassis, suited to branch-office WAN aggregation and serial device connectivity roles.
Specifications & What's Included
- Manufacturer: Wellfleet Communications / Bay Networks
- Model: 21003
- Part Number: 107913-01
- Form Factor: Desktop
- Front Panel: Wellfleet logo, ventilation slots
- Rear Panel Ports: Console (TX/RX/CL, DB9), RST (reset button), MAU (AUI, DB15), COM2 (DB25), COM1 (DB25), RLSD2, RLSD1
- Status Indicators: R / N / F LEDs adjacent to MAU/COM2 port cluster
- Serial interfaces: COM1 and COM2 (DB25), RLSD1 and RLSD2 for carrier-detect signaling
- Network interface: MAU (AUI) port for external transceiver attachment
- Console port: DB9 for local management access
- Included: Unit only (no power adapter, cables, or accessories observed)
Applications
The Wellfleet 21003 Access Node belongs to the Wellfleet/Bay Networks family of modular WAN access routers and communications servers that were widely deployed in enterprise branch-office and carrier environments during the late 1980s through the mid-1990s. Wellfleet was one of the pioneering companies in multi-protocol WAN routing before the router market consolidated around Cisco and others, and their access node platforms were used to aggregate serial WAN links — T1, fractional T1, and leased-line circuits — alongside LAN uplinks via AUI/MAU transceivers. The COM and RLSD port arrangement is characteristic of synchronous serial WAN interfaces of this era, used to connect CSU/DSUs and other DCE/DTE equipment. Today these units are primarily sought by collectors of classic networking hardware, legacy network labs, and engineers maintaining or studying early IP/WAN infrastructure from the Wellfleet and Bay Networks lineage.
This Wellfleet Bay Networks 21003 Access Node Communications Server has been inspected and appears to be in good condition. The enclosure shows typical light wear consistent with prior office or lab use. Rear ports — Console, MAU, COM1, COM2, RLSD1, and RLSD2 — appear intact and undamaged. The unit label is intact and clearly legible, confirming P/N 107913-01 and Model 21003. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
Warranty Information
Additional Information
Brand: |
Wellfleet / Bay Networks |
Model: |
21003 |
MPN: |
107913-01 |
Secondary Model: |
107913-01 |
Type: |
Access Node Communications Server |
SKU: |
19747 |
Form Factor: |
Desktop |
Interface Type: |
Console, MAU, COM1, COM2, RLSD1, RLSD2 |
Connector Types: |
DB9, DB25, MAU (AUI) |
Number of Ports: |
6 (Console, MAU, COM1, COM2, RLSD1, RLSD2) |
Management Type: |
Console Managed |
Network Type: |
WAN Access Node |
Condition: |
Used – Inspected |
Seller Notes: |
Unit only; no accessories included. |
Country/Region of Manufacture: |
United States |
Condition Notes: |
Wellfleet Bay Networks 21003 Access Node Server, P/N 107913-01. Inspected and in good condition. Enclosure shows light typical wear. All rear ports appear intact. Unit only. |