![Cisco Collaboration System 11.x Solution Reference Network Designs (SRND) - Cisco Unified CM Trunks [Cisco Collaboration Systems Release] - Cisco Cisco Collaboration System 11.x Solution Reference Network Designs (SRND) - Cisco Unified CM Trunks [Cisco Collaboration Systems Release] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/300001-400000/340001-350000/348001-349000/348639.eps/_jcr_content/renditions/348639.jpg)
Cisco Collaboration System 11.x Solution Reference Network Designs (SRND) - Cisco Unified CM Trunks [Cisco Collaboration Systems Release] - Cisco
![Cisco Collaboration System 12.x Solution Reference Network Designs (SRND) - Cisco Unified CM Trunks [Cisco Unified Communications Manager (CallManager)] - Cisco Cisco Collaboration System 12.x Solution Reference Network Designs (SRND) - Cisco Unified CM Trunks [Cisco Unified Communications Manager (CallManager)] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/300001-400000/340001-350000/348001-349000/348668.eps/_jcr_content/renditions/348668.jpg)
Cisco Collaboration System 12.x Solution Reference Network Designs (SRND) - Cisco Unified CM Trunks [Cisco Unified Communications Manager (CallManager)] - Cisco
![Scalability and High Availability > SIP Trunking Design and Implementation Considerations | Cisco Press Scalability and High Availability > SIP Trunking Design and Implementation Considerations | Cisco Press](https://www.ciscopress.com/content/images/chap7_9781587059445/elementLinks/si120709.jpg)