Quick Answer: What replaced CP-840-K9=?
Discontinued: CP-840-K9= | Replacement: CP-840S-K9=
Why CISCO SYSTEMS Discontinued the CP-840-K9=
CISCO SYSTEMS has announced End-of-Life for CP-840-K9=, with End of Sale scheduled for November 28, 2025. That means CP-840-K9= is in EOL in progress status: the product has a published discontinuation path, but it may still be available through distribution channels while inventory lasts. For IT buyers, the main planning date is the November 28, 2025 EOS milestone for CP-840-K9=.
Based on the available research, Cisco has not published a specific reason for discontinuing CP-840-K9=. The manufacturer notices referenced here do not identify a technical, regulatory, or product-generation cause. This is common in Cisco lifecycle notices, where the vendor provides the timeline and support policy without giving a detailed explanation for why a part such as CP-840-K9= is being retired.
It is also important to note a sourcing nuance: while this article addresses CP-840S-K9= as the replacement for CP-840-K9=, the provided manufacturer research does not confirm an official Cisco migration statement naming CP-840S-K9= as the direct successor. In other words, CP-840-K9= has a clear EOL path, but an official Cisco replacement mapping to CP-840S-K9= was not found in the supplied sources. Procurement teams should treat CP-840S-K9= as the replacement option being referenced here, while validating fit for their own environment before standardizing.
The support outlook is more predictable than the replacement mapping. Under Cisco policy, products like CP-840-K9= typically continue to receive TAC support and parts availability for up to five years after EOS. That gives organizations using CP-840-K9= a transition window, but it does not remove the need to plan ahead for purchasing, sparing, and future compatibility.
What's New in the CP-840S-K9=
Replacement positioning for CP-840-K9= buyers
The clearest update is commercial rather than technical: CP-840S-K9= is the replacement part being used for buyers moving off CP-840-K9=. If your team is searching for CP-840-K9= because of Cisco's End-of-Life notice, CP-840S-K9= is the part number to review for forward purchasing and quote requests.
Official technical differences are not available in the provided sources
No manufacturer specification sheets, comparison tables, or migration documents were provided that detail differences between CP-840-K9= and CP-840S-K9=. The available research identifies CP-840-K9= as "Cisco Webex 840 IP Phone and Battery Only," but it does not include equivalent product detail for CP-840S-K9=. Because of that, it would be inaccurate to claim hardware, firmware, battery, wireless, or management changes between CP-840-K9= and CP-840S-K9= without further manufacturer documentation.
What buyers should infer from the lifecycle change
Even without a published feature delta, the practical change is straightforward: CP-840-K9= is moving through the Cisco lifecycle, and CP-840S-K9= is the part number to investigate for ongoing purchasing. For procurement teams, that means updating internal BOMs, approved vendor lists, and future purchase requests from CP-840-K9= to CP-840S-K9= where appropriate.
Availability planning matters now
Since CP-840-K9= remains available from some distributors even after the End-of-Life announcement, organizations may still be able to buy it for short-term continuity or installed-base support. However, once CP-840-K9= reaches EOS, availability will become less predictable. That makes CP-840S-K9= the more relevant search target for buyers planning beyond the immediate quarter.
At-a-Glance Comparison
| Feature | CP-840-K9= | CP-840S-K9= |
|---|---|---|
| Manufacturer | CISCO SYSTEMS | CISCO SYSTEMS |
| Lifecycle status | EOL in progress | Replacement part referenced for CP-840-K9= |
| End of Sale | November 28, 2025 | Not stated in provided sources |
| Current market availability | Still available from distributors while stock lasts | Available to source |
| Official Cisco replacement confirmation | Not applicable | Not confirmed in provided manufacturer sources |
| Published technical differences | Not fully detailed in provided sources | Not available in provided sources |
| Known product description | Cisco Webex 840 IP Phone and Battery Only | Not provided in supplied research |
| Post-EOS support expectation | Up to 5 years TAC support and parts per Cisco policy | Not stated in provided sources |
Upgrade Checklist
- Audit your installed base and open purchase requests for CP-840-K9= so you know how many units are still needed before the November 28, 2025 EOS date.
- Update procurement records to flag CP-840-K9= as EOL in progress and add CP-840S-K9= as the replacement part for sourcing review.
- Confirm whether your internal engineering or collaboration team has any Cisco documentation beyond the supplied sources that validates CP-840S-K9= as the official successor to CP-840-K9=.
- Check current distributor stock if you need CP-840-K9= for like-for-like expansion, spares, or installed-base consistency in the short term.
- Request a quote for CP-840S-K9= and compare lead time, warranty terms, and approved supplier status before placing long-term orders.
- Review support policy timing for CP-840-K9=, including expected TAC and parts coverage after EOS, so you can align refresh timing with service requirements.
- Document any configuration, accessory, or operational dependencies tied to CP-840-K9=, especially because published technical differences for CP-840S-K9= were not available in the provided research.
- Standardize future searches, RFQs, and budget planning around CP-840S-K9= rather than CP-840-K9= to avoid last-minute sourcing issues.
Bottom Line
CP-840-K9= is in End-of-Life transition, with Cisco setting End of Sale for November 28, 2025. While CP-840S-K9= is the replacement part referenced for buyers moving on from CP-840-K9=, the supplied sources do not confirm an official Cisco replacement notice or publish technical differences between the two part numbers.
For most procurement teams, the practical next step is to stop planning new long-term purchases around CP-840-K9= and begin evaluating CP-840S-K9= instead. If you still need CP-840-K9= for continuity, act before stock becomes harder to source.
Ready to switch? Shop CP-840S-K9= →
