Replacement for CISCO1801: Drop-In Alternatives We Stock
Looking for a replacement for the CISCO1801 (CISCO1801 - Cisco 1801 8-Port ISDN / DSL Modem Fast Ethernet Integrated Services Router)? Pro Disk Network ships Cisco drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the CISCO1801
| SKU | CISCO1801 |
|---|---|
| Product | CISCO1801 - Cisco 1801 8-Port ISDN / DSL Modem Fast Ethernet Integrated Services Router |
| Stock status | In Stock |
| Detail page | View CISCO1801 › |
Drop-in replacements for CISCO1801
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
NM-1CT1 - Cisco Channelized T1/ISDN-PRI Network Module 1 x Channelized T1/ISDN PRI WAN Network Module
SKU: NM-1CT1
Price: $150.71
NM-1FE2CT1-CSU - Cisco 3600 1-Port F Enet 2-Port Channel T1/ISDN PRI Network Module
SKU: NM-1FE2CT1-CSU
Price: $276.32
MEM1800-512CF - Cisco 512MB CompactFlash (CF) Memory Card for 1801 1811 1841
SKU: MEM1800-512CF
Price: $261.46
WS-C2950G-24-EI - Cisco Catalyst 2950G 24-Port 24 x 10/100Base-TX + 2 x uplink Port Layer 2 Managed Fast Ethernet Network Switch
SKU: WS-C2950G-24-EI
Price: $213.68
73-1688-04 - Cisco Catalyst 1-Port Fast Ethernet 100BASETX Port Adapter
SKU: 73-1688-04
Price: $235.79
WIC-1B-U-V2 - Cisco Sinlge Port ISDN BRI U High-Speed WAN Interface Card
SKU: WIC-1B-U-V2
Price: $99.58
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.