Swati Somani - Manageability of Voice Networks - Interop Mumbai 2009

© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 1

Manageability of Voice Networks

Swati Somani

CCIE Voice #18155


Today’s Discussion

� Problems in managing voice networks

� The solution: Voice Network Management Systems (VNMS)

� Understanding the model and its elements

� Mapping VNMS to industry wish list


Problems in Managing Voice Networks

Too many disconnected

calls….

Unable to join the conference..missed a

critical meeting!!!!!

Ping: Device Unreachable

Phone not ringing!!!!!!

Phone calls not working

No Dialtone!!!!!!!!!

No Voicemail access…

I cant hear you well……

Emergency calls not working…

Trap: Link Down

Voice not clear…

Hello ..heello…heloo

helooo..

HQ phones not able to call

branch..


The Solution

Voice Network Management Systems (VNMS)

� Unprecedented visibility and control over enterprise voice networks

� Continuously monitor, detect and notify – all in real time


Understanding The ModelVoice Network Management Hierarchical Model

Service Management Layer (SML)

Network Management Layer (NML)

Element Management Layer (NML)

Direct Polling or Unsolicited Notification

Filtering and Forwarding

Correlation and

Automation (Intelligence)

Syslog SNMP NetFlow IPSLA

Fault Management

Configuration Management

Accounting Management

Performance Management

Security Management

Fault Managers

Configuration Managers

Accounting Managers

Performance Managers

Security Managers

Service Manager

Manager of Managers (MoM)

Incident / Change

Management

Common Database

Bi-Directional Communication

Business Intelligence

Event Correlation

Event Automation

Bi-Directional Communication


Understanding The Managed Elements

Headquarters

CUCM

A

UnityUCCC

PresencePSTN

VoIP WAN

CME/CUE

CCCC

Probe

Branch

Infrastructure Applications

SNMP Syslog IPSLA RMON NBAR AXL/SOAP

Endpoints


Mapping VNMS To Industry Wish List


The Wish List

� Perform proactive network and voice management

� Provide real-time alerting and notification

� Perform diagnostic tests to identify potential problems

� Monitor voice quality

� Perform root cause analysis and impact analysis

� Provide voice statistics analysis and reporting

� Simplify deployment and operations

� Reduce network costs and support costs

Voice Network Management System has the answers


Proactive Network and Voice Management

� Automatic discovery of UC devices and the underlying network infrastructure

� Provide a Holistic graphical drill-down view of Operations

� Provide Real-time monitoring across

•Every UC device

•Endpoint

•Link/interfaces

•Application services

•Features and Functionality

•Devices and Phones inventory

•Device Performance management

.1.3.6.1.4.1.9.9.156.2.0.3; cm1; ccmPhoneStatusUpdate …

.1.3.6.1.4.1.9.9.156.2.0.3; cm1; ccmPhoneStatusUpdate




Real-Time Alerting and Notification

� Setup filters and thresholds

� Alerting and immediate notification on

•Threshold violation

•Device / end point unreachable

•Service failure

•Voice quality violation

Email Trap Syslog


Diagnostic Tests To Identify Potential Problems

Phone Registration End-to-End Call

Device StatusQueries

Simulate End User Activity•End-to-End calls•Phone Registration•Dial Tone•Conference•Message Waiting•Emergency call

Replicate voice traffic •Measure latency / Jitter / packet loss


Monitor Call Quality

� Analyse and report on the quality of voice for active calls.

� Mean Opinion Score (MOS) is the key performance indicator

• Other key metrics: delay/latency, jitter, packet loss, round trip time, call completed v/s call attempted ratio, dial tone delay

Excellent ?

Good ?

Satisfactory?

Fair?

Unsatisfactory?


Root Cause and Impact Analysis

CUCM

UnityUCCC

Presence

VoIP WAN

CME/CUE

Probe

Headquarters Branch

.1.3.6.1.6.3.1.1.5.0.2 vg01 IfIndex8 Link Down

...

Snmp-timeout – device sw0x no reachable

Critical Event Vg01— FastEthernet 0/1 down

Impact :Impacted phones: 1301, 1302, 2887..

Unable to make calls, ...

CCCC

Mgmt System

PSTN

.1.3.6.1.4.1.9.9.156.2.0.3; cm1; ccmPhoneStatusUpdate …

.1.3.6.1.4.1.9.9.156.2.0.3; cm1; ccmPhoneStatusUpdate ……

A

Example: What Does a Link Down Really Mean for the Service


Voice Statistics Analysis and ReportingProvide Historical reporting, trending and analysis for

�Call Volume

�Service Availability

�Quality of Service

�Most impacted endpoints

�Network utilization/call detail records

�Capacity Planning data like trunk utilization

�Device Performance utilization

�Troubleshooting data like percentage of unregistered devices , phones , etc


Simplify Deployment and Operations

� Provide a single consolidated view of users and their services

� Provide a single provisioning interface for users and their unified communications resources

� Ease Day 1 and Day 2 provisioning

� Is Policy-based, business oriented

� Allow permissions enabled control of access and delegation of tasks


Major UC-NMS Vendors


Cisco UCMS – An Integrated Management Suite

Provisioning ManagerSimplified Deployment and

Configuration

Operations ManagerContinuous Monitoring and

Fault Management

Service Statistics ManagerHistorical Voice Reporting, Capacity

Planning and Trending

Service MonitorReal Time Voice Quality Monitoring and Alerting


Recommended Reading

Source: Cisco Press

Swati [email protected]

Swati Somani - Manageability of Voice Networks - Interop Mumbai 2009

Technology

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quality of voice

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