Introduction to cmterm-7937-1-4-4-SCCP.cop.sgn
This signed configuration package enhances Skinny Client Control Protocol (SCCP) functionality for Cisco 7937 Conference Station devices in Unified Communications Manager (CUCM) 14.x environments. Designed for enterprise contact centers and conference room deployments, it introduces advanced telephony event handling compliant with ITU-T Q.713 SCCP specifications.
The .sgn extension denotes Cisco’s Secure Gateway Notation format, ensuring cryptographic validation through CUCM’s subsystem state management framework. Released in Q1 2025, it addresses critical interoperability requirements between legacy SCCP endpoints and modern SIP-based UC ecosystems.
Key Technical Enhancements
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Protocol Optimization
- Implements segmented XUDT message handling per ITU-T Q.714, supporting 512-byte payloads for conference bridge status notifications
- Adds Global Title Translation (GTT) routing tables compatible with CUCM 14.2+ localization policies
-
Security Validation
- Enforces SGN=Y parameter authentication for firmware update requests
- Embeds FIPS 140-3 compliant SHA3-384 hashes in subsystem communication packets
-
Device Management
- Supports bidirectional status synchronization between 7937 devices and Cisco Unified Intelligence Center
- Introduces 6 new CTI ports for third-party CRM integration via JTAPI 11.5(1)
Compatibility Matrix
| Supported Platform | Minimum Version | Protocol Requirements |
|---|---|---|
| CUCM | 14.0(1)SU2 | SCCP 34.0(2) |
| Cisco 7937 Hardware | CP-7937G-V2 | 512MB Flash Memory |
| IM & Presence Service | 14.0(1) | TLS 1.2 Mandatory |
| Cisco Unity Connection | 14.0(1) | SQL Server 2022 Native Client |
Incompatible with CUCM 12.5(1)SU6 or earlier due to SCCP message structure changes
Authorized Download Verification
This package requires simultaneous download of two components from Cisco’s Secure Software Repository:
-
Primary Package
- Name: cmterm-7937-1-4-4-SCCP.cop.sgn
- Size: 387MB
- Contains: Protocol binaries, locale files, device profiles
-
Validation Metadata
- Name: cmterm-7937-1-4-4-SCCP.cop.sgn.sha3
- Size: 1KB
- Contains: Cryptographic manifest for CUCM’s Auto Update Service
Download Instructions:
- Visit Cisco Software Center
- Search “7937 SCCP Extension Pack 1.4.4”
- Select “Show All Downloads” under Unified Communications Manager 14.x
- Download both files to your TFTP server’s /tftp/cmterm/ directory
For verified mirror access with guaranteed file integrity, visit IOSHub’s SCCP Repository.
This technical overview synthesizes SCCP protocol specifications from ITU-T Q.71x series and Cisco’s secure subsystem management guidelines. Always validate package compatibility using Cisco’s Online Compatibility Tool before deployment.
