Call Manager Express:
Product Information:
Cisco Unified CallManager Express: All Versions Documentation
Cisco Unified CME 4.X Supported Firmware, Platforms, Memory, and Voice Products
Cisco Unified CallManager Express 4.X Datasheet
Cisco Unified CME and Cisco IOS Release Compatibility Matrix
Cisco Unified CME Localization Matrix
Design:
Cisco Unified CME Solution Reference Network Design Guide (SRND)
Cisco Unified Communications System Product Comparison
Design Calculators:
Cisco Power Calculator
Cisco DSP Calculator
Cisco Codec Calculator
Adminstrator Guides:
System
Administrator Guide:
Cisco Unified CME Configuration Guide for SIP IP PhonesCommand Reference
Cisco IP Communications Express Quick Configuration Tool:
Quick Configuration Tool (QCT)
QCT User Guide
QCT Work Sheets