Voice over Internet Protocol at Space Telescope Science Institute.

Voice over Internet Protocol

atSpace Telescope Science Institute

• What is VoIP?• What will be VoIP services will be offered at STScI?

– Basic VoIP Features (see user and administrative features and benefits)

– Voicemail– Soft Phone (Cisco Jabber for Macs and Windows laptops)

and Mobility ( iPhones, iPads, Androids and BlackBerrys)• Scalability of STScI VoIP infrastructure

What is Voice over Internet Protocol (VoIP)

AnalogDigital Signal

Cisco Call Manager

Digital SignalAnalog

Cisco VoIP features

Summary of user features for Cisco VoIP

Call connectionImpromptu audio conference (up to 6

internal participants)Caller ID (at this time only for Internal calls)Hands free, full duplex Speaker phoneHeadset (uses RJ11 type connector)Message Waiting Indicator (MWI)HoldTransfer

Summary of user features for Cisco VoIP

Dialed number display Intercom Use of reground and recyclable products in

manufacturing handsets (Cisco phone only) Supported encryption for voice traffic,

TLS/SRTP Call forwarding to either another local number

or external number Self service website to allow user to configure

their desktop phone remotely.

Summary of user features for Cisco VoIP

Call Park and pickup Direct Inward dialing and Direct Outward

dialing Directory dial from phone: Corporate directory

(AD) and personal directory (contacts address book)

Mute capability On-hook dialing Multiple speed dials Pre-record messages

Summary of features managing your Voice communications remotely

Desktop voice communication can be managed using a WEB browser.

Customize Do Not Disturb optionsSet call forwarding per lineChange the Voice Message Indicator setting per lineChange the Audible Voice Message Indicator setting per

lineChange ring setting per lineSet speed dial buttons on your desktop phoneChange your PINAdd a New Remote destination

Summary of user features for Cisco voicemail You can select conversation type; full or brief prompts are supported. You can change prompt and message playback speed. You can address and then record a message, or record and then address a message. You can record up to five personal greetings (alternate, busy, internal, off-hours, or

standard). You can specify the order in which messages are presented over the phone, by

message type (voice, fax, or email), urgency, or LIFO/FIFO. You can set an expiration date for any personal greeting. You can manage an alternate greeting, require callers to listen to the full greeting, or

notify users when a greeting is on. With a cascade message-notification feature, you can send additional notification

types if a message is not retrieved. You can select whether or not message counts are announced; options include type,

totals, saved, and new counts. You can specify Call Forward to a personal greeting or busy greeting. You can provide message notification for new messages through devices such as

Simple Mail Transfer Protocol (SMTP) text, pagers, and phone destinations. You can use your desktop telephone to manage, listen or record messages

Summary of features using Cisco’s Jabber application

Use a single, intuitive interface for instant messaging with individuals and groups, IP telephony, visual voicemail, voice and web conferencing, desktop sharing1, communication history, and integrated directories.

Presence (if you are online or Do Not Disturb)View real-time availability of co-workers and colleagues within and

outside the enterprise network.Exchange and display presence availability information and instant

messages with other Cisco Jabber users, Cisco Unified Personal Communicator, Cisco WebEx Connect®, Microsoft Office Communicator and Lync, IBM Lotus Sametime, AOL, GoogleTalk, and many other XMPP-compatible clients.

Exchange presence information with mobile handsets using Cisco Jabber or third-party XMPP-compatible clients.

Display customized availability messages.Your status is updated automatically when you are in a Cisco WebEx

meeting or sharing an application.

What does the user interface for Cisco Jabber look like

Call manager server pair will support up to 10,000 subscribers. Unity server (voicemail) can support up to 15000 users and a

maximum of 250,000 users per clusters. Maximum number of subscribers for Cisco Call Manager cluster

can support up to 30,000 users. Cisco IP Telephony solution can support multiple Call Manager

clusters. Adding services is accomplished by adding more application

servers for example if we wanted to provision Cisco Mobile Communicator as a service. We would add the application server to our voice network. Below is the features of Cisco mobility.

Cisco has delivered Unified Communications in modular architecture, as services are needed the can be added to the overall Unified Communication architecture.

In the future we may use external Session Initiation Protocol (SIP) trunks instead of connecting to the public telephone network. This will help reduce our cost for external call and long distance calls.

Scalability of STScI VoIP Infrastructure

Impact to the network with the deployment of VoIP

Public Telephone Network

Stsci.edu

Cisco Unified IP Presence server(used for Cisco Jabber)

Cisco Unity server(voicemail)

Cisco Call Manager

STScI VPN server

Internet

Cisco Voice Gateway

STScI internalrouter

Microsoft Exchangeserver

Internet

STScI VoIP Deployment model

Single site deployment

More information about Cisco’s IP Telephony can be found at –http://www.cisco.com/en/US/products/sw/voicesw/products_category_buyers_guide.html

More information about the International Telecommunications Union (ITU) and voice standards can be found at – http://www.itu.int/ITU-T/50/docs/ITU-T_50.pdf