UMass Lowell

IT ConferenceJune 7, 2017

History Aging traditional PBX from Aastra/Mitel

New solutions push the envelope: Disruptive Technology

Issued RFP in 2015 for Unified Communications solution

15 responses, narrowed to 3: Avaya, Cisco, and Microsoft

Analysis of services, integration, cost, and long-term viability

Research and discussion with many corporate and higher-ed organizations

Lengthy pseudo-production ‘Proof of Concept’

Selected Microsoft’s ‘Skype for Business’ solution

It’s a Phone System…and Much More

Skype for Business Capabilities

What is Skype for Business?

Mobility/Telephony

One phone number, cell-phone interoperability, works anywhere, on all platforms (Windows, Mac, Android, iOS)

Instant Messaging (IM)

Secure, integrated, and timely communication with internal and invited external colleagues

Presence See the availability of colleagues

Conferencing/Collaboration

Integrated and easy audio, video, and web conferencing with document/desktop sharing and whiteboard…scheduled or ad-hoc

Integrated w/ Microsoft Office

Tightly integrated with the Microsoft Office suite, available on home computers. No additional software to install.

= Available = Busy/On The Phone

= Away = Do Not Disturb

Presence is Powerful

Is my colleague available?

Check before you… Call IM Walk to their office

Automatically updated based on… Outlook calendar Computer status/screensaver Connection to a projector Can override and manually control as well

It’s All About Flexibility A telephone is not required

…but they’re available and work with all the other features

Headset (wired or wireless) connected to acomputer provides mobility

Cell phone with the Skype for Business client Answer or make calls where and when you want with

your university identity Instant Message

Standardized on AudioCodes & Jabra

Basic Handset

Multiline Handset Wireless Headset

Speaker Phone

Conference Room

Wired Headset

Implementation Notes Analysis of cloud vs on-premise

High-performance and reliable network is required

PBX integration is critical

Tight coordination with top-notch IT teams

Additional third-party systems required Session Border Controllers, call center, E-911, provisioning/reporting, etc

Reuse legacy VoIP phones as basic end-points

Systems Engineering

Voice Services

Network Services

For More Information

UMass Lowell Skype for BusinessInformation, Tips, and Job Aids

www.uml.edu/SkypeforBusiness

Server InfrastructurePrimary (Shrewsbury) Secondary (Lowell)

• Skype for Business Front End Servers (3)• Skype for Business Edge Servers (2)• SQL Servers (3)• Office Web Apps Servers (2)• Enghouse Call Center Server (1)• Enghouse Snapshot Server (1)• West EGW E-911 Server (1)• AudioCodes EMS Server (1)• AudioCodes SPS Server (1)• Persistent Chat Server (1)• SEFAUTIL Server (1)

• Skype for Business Front End Servers (3)• Skype for Business Edge Servers (2)• SQL Servers (3)• Office Web Apps Servers (2)• Enghouse Call Center Server (1)• Enghouse Snapshot Server (1)• Enghouse QMS Server (1)• West EGW E-911Server (1)• AudioCodes EMS Server (1)• AudioCodes SEM Server (1)• SEFAUTIL Server (1)• Polycom TFTP Provisioning Server (1)

• KEMP LM-5600 Load Balancers (2)• AudioCodes Mediant 3000 SBC (1)

• KEMP LM-3400 Load Balancers (2)• AudioCodes Mediant 3000 SBC (1)

Sample Network Flow DiagramInternal

Internal Firewall

External

Branch Office

Skype for Business 2015 users

Skype for Business 2015 users

External Firewall

Directors

Skype for Business 2015 users

Active Directory Domain Services

Front end pool

ICE: STUN/TCP:443, UDP:3478

SRTP: STUN/TCP:443, UDP:3478

SIP/MTLS:5062

SIP/MTLS:5061

SIP/MTLS

 Enterprise Voice

Legend

SIP traffic

Call Admission Control (CAC) traffic

RTP/SRTP traffic: A/V Conferencing

ICE traffic

Arrow direction indicates which server initiates the connection.Actual traffic is bi-directional.

Access Edge - SIP/TLS:443

A/V Edge – ICE: STUN/TCP:443, STUN/UDP:3478

Edge Pool

Exchange UM

Branch Appliance

SRTP: STUN/TCP:443, UDP:3478

ICE: STUN/TCP:443, UDP:3478

SRTP/UDP:30,000-39,999

SRTP

: STU

N/T

CP:4

43, U

DP:

3478

ICE:

STU

N/T

CP:4

43, U

DP:

3478

TURN

/TCP

:448

SIP/

TLS:

5061

SRTP

/RTC

P:49

,152

-57,

500

STUN/TCP:448

SIP/TLS:5061

Mediation Pool(optional)

MRAS traffic

MRAS traffic

Media bypass: audio routed directly to gateway bypassing Mediation Server.

Enterprise Voice applications

If no Edge Server is defined in the topology, callee checks the Front End Server’s Bandwidth Policy Service.

Lync client automatically registers with the pool if the Branch Appliance becomes unavailable.

Port number to service traffic assignment:5064 - Telephony Conferencing Service5067 – Mediation Server Service5071 - Response Group Service5072 - Conferencing Attendant Service5073 - Conferencing Announcement Service5075 - Call Park Service

WANConnection

Connectivity to:

• IP-PSTN gateway • IP/PBX • Direct SIP • SIP trunk

SRTP/RTCP:49,152-57,500

SIP/TLS:5061,5070

SIP/

TLS:

5061

SIP/MTLS:5061

HTTPS:444

SIP/MTLS:5062

Version date 6/25/2015 © 2015 Microsoft Corporation. All rights reserved. To send feedback about this documentation, please write to us at SfBdoc2015@microsoft.com.

SIP/TCP:5060,5061

SRTP/RTCP:60,000-64,000

For federation, SBA connects directly with Director. If no Director is available, federation traffic goes directly to the Edge Server.

Media codec varies per workload: RTAudio, G.711, SILK