Understanding Cisco Unified Communications Manager Architecture Getting Started with Cisco Unified Communications Manager
Outline • Cisco Unified Communications • Cisco Unified Communications Manager • Cisco Unified Communications Manager Hardware Requirements • Cisco Unified Communications Operating System • Cisco Unified Communications Manager Database • Cisco Unified Communications Manager Licensing Model • Cisco Unified Communications Manager Licensing Tools
Cisco Unified Communications Architecture IP telephony Customer contact center Video telephony Rich-media conferencing Third-party applications
Cisco Unified Communications Manager
Call processing Signaling and device control Dial plan administration Phone feature administration Directory services Programming interface to external applications Includes a backup-and-restore tool (disaster recovery system) Cisco Unified Communications Manager Functions
Cisco Unified Communications Manager Signaling and Media Paths Cisco Unified Communications Manager Signaling Protocol (SCCP / SIP) Signaling Protocol (SCCP / SIP) Media Exchange — (RTP) IP Phone A IP Phone B • Cisco Unified Communications Manager performs call setup and maintenance tasks using a Signaling Protocol (SCCP/SIP). • Media exchange occurs directly between endpoints using RTP.
Cisco Unified Communications Manager Hardware, Software, and Clustering • Complete hardware and software solution (appliance model) • Factory-installed and field-configured • Can be installed on Cisco 7800 MCS server platform or on approved third-party servers from IBM and HP • No customer access to operating system • Only GUI and CLI access to appliance system • Third-party access via documented APIs only • Supports clusters for redundancy and load sharing • Provides database redundancy by sharing a common database • Provides call-processing redundancy by Cisco Unified Communications Manager groups • Cluster includes the following: • One publisher • Total maximum of 20 servers (“nodes”) running various services, including TFTP, media resources, conferencing, and call processing • Maximum of eight nodes can be used for call processing (running the Cisco Unified Communications Manager service)
Cisco Unified Communications Manager Cluster Publisher IDS Replication IDS IDS IDS IDS CTI Manager ICCS IDS MoH Server IDS IDS IDS TFTP Server IDS SW Conf. Call-Processing Servers IDS Subscribers
Cisco Unified Communications Manager Hardware Requirements
Cisco 7800 Series MCS Cisco Unified Communications Manager Release 6.0 can be installed on the Cisco 7800 MCS server platforms that are available from Cisco. Cisco 7800 MCS server platforms: 7816 Series 7825 Series 7835 Series 7845 Series Minimum hardware requirements for Cisco Unified Communications Manager Release 6.0: 2 GHz processor 2 GB RAM 72 GB hard disk For detailed model information, check Cisco Unified Communications Manager Server Support Matrix http://www.cisco.com/en/US/products/hw/voiceapp/ps378/prod_brochure0900aecd8062a4f9.html
Third-Party Hardware Solutions Approved by Cisco Cisco Unified Communications Manager Release 6.0 can also be installed on the following third-party hardware platforms approved by Cisco: HP Server Solutions http://www.cisco.com/en/US/prod/collateral/voicesw/ps6790/ps5748/ps378/product_solution_overview09186a0080107d79.html IBM Server Solutions http://www.cisco.com/en/US/products/hw/voiceapp/ps378/prod_brochure0900aecd80091615.html
Cisco Unified Communications Operating System
Cisco Unified Communications Operating System Appliance operating system (based on Red Hat Linux) Operating system updates provided by Cisco(along with application updates) Unnecessary accounts and services disabled IDS as the database DHCP server Cisco Security Agent Cisco Unified Communications operating system is also used for these other Cisco Unified Communications applications: Cisco Emergency Responder 2.0 Cisco Unity Connection 2.0 Cisco Unified Presence 6.0
Cisco Unified Communications Operating System Access • Root and other common default accounts of native operating system disabled. • No native operating system access. • Only Cisco CLI and GUI can be used. • Cisco CLI can be used to troubleshoot GUI access. • No access to native operating system debug interfaces. • Traces, alarms, and counters can be enabled and monitored through Cisco CLI and GUI. • No direct access to file system. • Only some files and directories accessible through Cisco CLI and GUI. • Customer can activate remote account support for specific time for Cisco TAC access.
Cisco Unified Communications Manager Database
Cisco Unified Communications Database IBM IDS database stores Static configuration data: Servers and enabled services within the cluster Devices (phones, gateways, and trunks) Users, dial plan, etc. Dynamic data utilized by user-facing features: Call Forward All, MWI Privacy, DND Hunt group login status, etc. Basically a single master database model R/W database access only for publisher (read-only for subscribers) Exception: Subscribers do allow R/W access for user-facing features
Services That Rely On The Publisher These services are not available in the event of a publisher failure.
User-Facing Features Call Forward All (CFA) Message Waiting Indication (MWI) Privacy Enable/Disable Do Not Disturb Enable/Disable (DND) Extension Mobility Login (EM) Hunt Group Logout Device Mobility CTI CAPF status for end users and application users Credential hacking and authentication These features do not rely on the availability of the publisher because necessary data can be written to subscribers.
Replication is fully meshed. Most data are still hub-and-spoke (replicated from publisher to subscribers). Only user-facing features data are writable on a subscriber and bidirectionally replicated between all servers. Cisco Unified Communications Manager Release 6.0 Database Replication Publisher (all data writable) Subscriber (User-facing features writable) Subscriber (User-facing features writable) Subscriber (User-facing features writable) Subscriber (User-facing features writable)
Database Access Control DB access between members of a cluster is protected By IP access control (dynamic firewall "iptables") By security password Special configuration procedure required to enable database access for subscribers At publisher, using Cisco Unified Communications Manager Administration, add subscriber to list of servers before installation of subscriber During subscriber installation, enter same DB security password that was configured during installation of publisher Publisher Subscriber Firewall Subscriber:DB accesspermitted Other: DB AccessDenied
Cisco Unified Communications Manager Licensing Model
Cisco Unified Communications Manager Licensing There are three types of licenses. Software license is required for using CUCM 6 software. Device license units required for devices (phones). Node licenses required for each call-processing Cisco Unified Communications Manager server within the cluster. Licenses are required per cluster and provided by license files. License file is bound to MAC address of publisher (running the licensing service). Cisco Unified CM cluster continues to work if licensing service is stopped (but no configuration changes allowed). Cisco Unified Communications Manager LICENSE
Device License Units Amount of device license units depends on device type and device capabilities. Cisco phone or third-party phone Number of lines Video capabilities Etc. Number of units required per device can be viewed from Cisco Unified Communications Manager Administration. Device License Units
License File Specifics • The license file contains the following information: • MAC address of the license server (publisher) • Version (major release) of the Cisco Unified Communications Manager software • Number of node licenses • Number of device license units • License files are additive (multiple license files can be loaded). • Cisco FlexLM process is used to obtain licenses. • License file integrity is assured by a digital signature. • Upgrade considerations • From Cisco Unified CallManager Release 4.x • An interim license file is created during upgrade. • No changes possible until replaced by real license file. • From Unified Cisco Unified CallManager Release 5.x • A software license has to be added (Cisco Unified CM 5.x only required node licenses and device license units).
Example License File INCREMENT PHONE_UNIT cisco 6.0 permanent uncounted \ VENDOR_STRING=<Count>1000</Count><OrigMacId>000BCD4EE59D</OrigMacId><LicFileVersion>1.0</L icFileVersion> \ HOSTID=000bcd4ee59d NOTICE="<LicFileID>20050826140539162</LicFileID><LicLineID>2</LicLineID> \ <PAK></PAK>" SIGN="112D 17E4 A755 5EDC F616 0F2B B820 AA9C \ 0313 A36F B317 F359 1E08 5E15 E524 1915 66EA BC9F A82B CBC8 \ 4CAF 2930 017F D594 3E44 EBA3 04CD 01BF 38BA BF1B" 1000 Device License Units
License File Request Process (FlexLM) PAK Customer Place Order Ship PAK MAC Web Cisco.com GenerateLicenseFile E-Mail Install License Server
Obtaining Additional Licenses Obtaining additional device units and nodes licenses uses the same process as obtaining a new license file. The customer places an order for the additional licenses for a license server (MAC address of publisher). When the order is received, Cisco.com generates a license file with the additional count. This new license file will have to be uploaded to the license server and will be cumulative. CALLMANAGER LICENSE CALLMANAGER LICENSE New Current License File Order for additional 100 units License Server 100 units 100 units 200 units
Cisco Unified Communications Manager Licensing Tools
Licensing Functional Diagram License Server:Keeps track of licenses purchased and used. License Manager: Cisco Unified Communications Manager service acts as a broker between Cisco Unified CM applications that use licensing information and the license server. Cisco Unified CommunicationsManager Request (1) Request (2) Admin Subsystem License Manager License Server Response (4) Grant orDeny (3) Async-Notification(for Deny)(5) Alarm Subsystem
Licensing Functional Diagram (Cont.) Administration subsystem Keeps information about the license units required for each phone type Provides license unit calculator Displays the total license capacity and the number of licenses in use Alarm subsystem provides alarms for following conditions: Overdraft License server down Insufficient licenses License file version mismatch Request (1) Admin Subsystem License Manager Response (4) Async-Notification(for Deny)(5) Alarm Subsystem Unified CM
Calculating License Units Cisco Unified Communications Manager Administration includes a license calculator that displays the amount of units consumed per device and calculates the total amount of required units for a given number of devices.
Generating License Unit Report Cisco Unified Communications Manager Administration includes a license unit report that displays the number of authorized, used, and remaining license units.
Uploading License File License file upload steps Ensure that you have downloaded the license file to a local PC. From the PC, log in to Cisco Unified Communications Manager Administration. Go to System > Licensing > License File Upload.
Uploading License File (Cont.) Click Upload License File. Click Browse to choose the license file from local directory. Click Upload.
Uploading License File (Cont.) Click Continue after the file is validated.
Summary Cisco Unified Communications is a comprehensive communications system of voice, video, data, and mobility products and applications over a single network infrastructure using standards-based Internet Protocol. Cisco Unified Communications Manager functions include call processing, signaling and device control, dial plan administration, phone feature administration, directory services, and a programming interface. Cisco Unified Communications Manager must be installed on a supported Cisco MCS platform or third-party server hardware approved by Cisco.
Summary (Cont.) Access to the system is only allowed through the use of Cisco CLI and GUI tools. Cisco Unified Communications Manager uses an Informix Dynamic Server (IDS) database, and configuration information in the database is replicated from the first node to all subsequent nodes within a cluster. Three type of licenses are required: devices, applications, and software. License files are uploaded using Cisco Unified Communications Manager Administration GUI.