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L-FL-CME-SRST-25=
CME OR SRST 25SEAT E-DELIVERY RTU FOR 2900 3900 SERIES ISR
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L-FL-CME-SRST-25=-CME OR SRST 25SEAT E-DELIVERY RTU FOR 2900 3900 SERIES ISR is a specialized collaboration software license designed to extend telephony features for integrated services routers in the 2900 and 3900 series. Developed to support either CME (CallManager Express) or SRST (Survivable Remote Site Telephony) functionalities, it provides robust voice communication capabilities essential for resilient and efficient network operations.
Positioned within the Collaboration software category, this product is available as a volume license with a lifetime duration and is explicitly configured for a 25 seat telephony solution. Delivered via digital key with an online activation process, it is ideally suited for enterprise, SMB, and IT management use cases, ensuring official vendor specifications are met for secure router communications and advanced telephony management.
L-FL-CME-SRST-25= price is $252.92, a 80% saving from the Cisco list price of $1,264.56. L-FL-CME-SRST-25= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for L-FL-CME-SRST-25= for additional pricing. Browse the full Cisco Unified Communication Licenses series or explore all Cisco products.
Scenario: A regional branch office running Cisco Unified Communications Manager Express (CME) relies on an ISR 2900/3900 Series router for VoIP. When the primary WAN link fails, the L-FL-CME-SRST-25 E-Delivery RTU automatically activates SRST mode to host up to 25 concurrent calls locally, maintaining dial-tone, call control and basic voicemail. Benefit: Ensures uninterrupted business-critical voice services during network outages, reduces downtime by over 99%, and preserves SLA commitments without additional hardware.
Scenario: A mid-tier financial institution must isolate voice traffic from sensitive customer data to meet PCI-DSS and SOX requirements. By deploying the L-FL-CME-SRST-25 E-Delivery RTU on ISR 2900/3900 platforms, IT administrators partition voice and data VLANs, enforce encryption, and leverage local SRST fallback for uninterrupted telephony. Benefit: Achieves full regulatory compliance, minimizes risk of data breaches, and simplifies audits through centralized policy enforcement and secure voice-data segregation.
Scenario: An enterprise with 12 remote sites schedules nightly WAN maintenance windows, risking telephony interruption. Integrating L-FL-CME-SRST-25 E-Delivery RTU on each site’s ISR 2900/3900 enables automatic SRST activation to handle up to 25 simultaneous calls locally. Centralized scripts push software updates and configuration changes via e-delivery, ensuring consistency across all routers. Benefit: Delivers seamless local call control during WAN maintenance, slashes operational costs by 30% through automated provisioning, and streamlines multi-site voice management under a single pane of glass.
To get the detailed certification, please go to the Compliance Center.
| L-FL-CME-SRST-25= |  FL-CME-SRST-25= |  FL-CUSP-30 |  L-FL-VXML-1= |  FL-CUE-PORT-2= | |
|---|---|---|---|---|---|
| Product Type | Software License | Software License | Software License | Software License | Software License |
| Software Category | Collaboration | Security | Network Management | Other | Other |
| License Type | Volume | Retail | Subscription | Retail | Retail |
| License Duration | Lifetime | Lifetime | 1 Year | Lifetime | Lifetime |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise | Business |
| User Count | N/A | N/A | N/A | 1 User | 1 User |
| Device Count | N/A | N/A | N/A | 1 Device | N/A |
| Platform Compatibility | N/A | Windows | Cross-Platform | Web-Based | Windows |
| Delivery Method | Digital Key | Physical Media | Digital Key | Digital Key | Digital Key |
| Activation Type | Online Activation | Online Activation | Online Activation | Online Activation | Online Activation |
| Language Support | English | English | English | English | English |
| Bit Version | N/A | 64-bit | N/A | N/A | 64-bit |
| Cloud Integration | N/A | N/A | N/A | N/A | N/A |
| Software Format | Downloadable | Physical | Downloadable | Downloadable | Downloadable |
| Support Included | Vendor Support Required | Vendor Support Required | Yes | Vendor Support Required | Yes |
| Product Name | L-FL-CME-SRST-25=-CME OR SRST 25SEAT E-DELIVERY RTU FOR 2900 3900 SERIES ISR | FL-CME-SRST-25=-CME OR SRST 25SEAT PAPER RTU | FL-CUSP-30-FL-CUSP-30 CUSP Feature License for 30 SIP requests/second | L-FL-VXML-1=-VXML BROWSER - 1 SESSION E-DELIVERY RTU | FL-CUE-PORT-2=-FL-CUE-PORT-2= Unity Express License - 2 Port |
| License Key Included | Yes | Yes | Yes | Yes | Yes |
| ESD (Electronic Software Delivery) | Yes | No | Yes | Yes | Yes |
| Renewable | N/A | No | Yes | No | No |
| Compliance Certifications | N/A | N/A | N/A | N/A | N/A |
| Product Region | Global | Global | Global | Global | Global |
E-delivery SRST 25-seat license activated instantly. Branch phones registered locally without issues.
Smooth licensing process and reliable performance during WAN failures.
Worked exactly as expected in our ISR deployment.
Good survivability coverage for medium branch offices.
Consistent SRST behavior with no surprises.
The Cisco CME or SRST 25-Seat E-Delivery RTU license (SKU L-FL-CME-SRST-25=) is a perpetual Right-to-Use software license enabling up to 25 IP phone seats on Cisco Unified Communications Manager Express (CME) or Survivable Remote Site Telephony (SRST) for ISR 2900 and 3900 Series routers, delivered electronically.
This license is compatible with Cisco ISR 2900 and ISR 3900 Series routers running Cisco IOS with Integrated CME or SRST feature sets.
The license is delivered electronically via email, containing the Product Authorization Key (PAK) and download instructions upon purchase.
To activate, register your PAK on the Cisco Software Licensing portal, obtain the activation key, and apply it on the ISR via the 'license install' CLI commands.
It enables comprehensive call processing features including call routing, hold, transfer, conferencing, voicemail-to-email, auto-attendant, and SRST survivability for 25 IP phones.
Yes, you can upgrade by ordering the appropriate PAK for a larger seat count and applying the new activation key through the Cisco licensing portal.
CME provides full IP telephony services on the ISR router, while SRST offers limited call processing to maintain basic telephony during WAN outages.
Software updates are not included; access to bug fixes and upgrades requires a Cisco SMARTnet or Software Support Service contract.
Ensure your ISR 2900/3900 router runs a compatible Cisco IOS image with sufficient memory and flash, and that CME or SRST feature sets are enabled.
Use the 'show license summary' and 'show platform software voice tdm-default active' CLI commands on the ISR to confirm license status and seat count.
RTU stands for Right-to-Use, indicating a perpetual license model without requiring a separate license file installation.
Electronic licenses are typically delivered via email within minutes to a few hours after payment and order validation.
Yes, the license supports Cisco high-availability configurations, including Stateful Switchover (SSO) on supported 3900 Series platforms.
Technical support is not included; you must maintain an active Cisco SMARTnet or Software Support Service contract for troubleshooting and assistance.
Cisco allows returns of unused software licenses within 30 days of purchase, subject to Cisco's license return terms and conditions.