Past EOSL
The Cisco 4-Port T1/E1 RJ-48 Circuit Emulation over IP and Serial Interface Network Modules reached End of Service Life (EOSL) on 31 Mar 2015.
End of sale
01 Apr 2010EOSL
31 Mar 2015
01 Apr 2010EOSL
31 Mar 2015
- Manufacturer
- Cisco
- Product family
- Network Modules
- Models / part numbers
- NM-CEM-4SER, NM-CEM-4TE1
- Category
- Network Module
- End of sale / EOL
- 01 Apr 2010
- End of Service Life
- 31 Mar 2015
- Source
- OEM end-of-life notice · view source
- Notes
- Cisco end-of-life bulletin (announced 2009-10-01). Covers 4 part numbers, e.g. NM-CEM-4SER, NM-CEM-4TE1.
- Last checked
- 14 Nov 2026
Frequently asked questions
When is the Cisco 4-Port T1/E1 RJ-48 Circuit Emulation over IP and Serial Interface Network Modules End of Service Life?
Cisco 4-Port T1/E1 RJ-48 Circuit Emulation over IP and Serial Interface Network Modules reached End of Service Life on 31 Mar 2015, after End of Sale on 01 Apr 2010.
What happens after the 4-Port T1/E1 RJ-48 Circuit Emulation over IP and Serial Interface Network Modules reaches EOSL?
Cisco stops selling support contracts, spare parts and firmware updates. The hardware keeps working, but break/fix, parts and engineering help must come from a third-party maintenance provider.
Can SLA Expert support the 4-Port T1/E1 RJ-48 Circuit Emulation over IP and Serial Interface Network Modules after EOSL?
Yes — SLA Expert provides multi-vendor third-party maintenance, spares and field engineering for post-EOSL Cisco equipment across the Middle East and Africa. Request a quote to confirm coverage for your units.
Related Cisco EOSL dates
| Model | Category | End of sale | EOSL date | Status | |
|---|---|---|---|---|---|
| SM-X-ES Switching Modules SM-X-ES3-24-P, SM-X-ES3D-48-P, SM-X-ES3-16-P | Network Module | 15 Dec 2020 | 31 Dec 2025 | Past EOSL | |
| WAN interface modules including Multimode G.SHDSL, VDSL2, ADSL2/2+ and Select Serial WAN interfaces NIM-4SHDSL-EA, NIM-VAB-A, NIM-VA-B, NIM-VAB-M, SM-X-1T3/E3, P-1T | Network Module | 01 Aug 2026 | 31 Jul 2031 | OEM supported | |
| LAN Switch Network Interface Modules (NIMs) NIM-ES2-8, NIM-ES2-8-P | Network Module | 05 Mar 2025 | 31 Mar 2030 | OEM supported | |
| Switch module for Modular Platforms NIM-ES2-4 | Network Module | 17 Apr 2025 | 30 Apr 2030 | OEM supported | |
| HWIC, EHWIC and SM Modules for ISR G2 Routers EHWIC-1GE-SFP-CU, EHWIC-1GE-SFPCU, EHWIC-4ESG, EHWIC-4ESG-P, EHWIC-4G-LTE-AT, EHWIC-4G-LTE-ATPRM, EHWIC-4G-LTE-AU, EHWIC-4G-LTE-CA, EHWIC-4G-LTE-GB, EHWIC-4G-LTE-GBPRM, EHWIC-4G-LTE-ST, EHWIC-4G-LTE-STPRM | Network Module | 22 Feb 2019 | 29 Feb 2024 | Past EOSL | |
| Layer 2 and Layer 3 Ether Switch Modules for ISR G2 SM-ES2-16-P, SM-ES2-24, SM-ES2-24-P, SM-ES3-16-P, SM-ES3-24-P, SM-ES3G-16-P, SM-ES3G-24-P, SM-D-ES2-48, SM-D-ES3-48-P, SM-D-ES3G-48-P | Network Module | 29 Oct 2020 | 31 Oct 2025 | Past EOSL |