Remote Call Centers: Minimizing Voice Trunking Costs with RADs Vmux

1
Remote Call CentersMinimizing Voice Trunking
Costswith RADs Vmux

• For more info on TDMoIP, see
• www.TDMoIP.com

2
Typical ROI Example Large Remote Call Center

• Original Network Configuration
• 8 E1s between Salt Lake City and Buenos Aires
  (7,000/month per E1 x 8)
• TDM PBX/ACD equipment
• Voice compression equipment performing 81
  compression
• New Infrastructure
• Added 1 Vmux-2100 at Salt Lake City 1
  Vmux-2100 at Buenos Aires
• Reduced from 8 E1s to 4 E1s (via 161
  compression)
• Removed existing 81 compression equipment
• Simple ROI calculation

• Adding full Vmux redundancy increases payback
  time to only 3 months

3
What is TDMoIP?

• Protocol for extending circuits over IP, Ethernet
  or MPLS
• TDMoIP (CE) transports TDM circuits using circuit
  emulation
• TDMoIP (CV) optimizes bandwidth by adding voice
  compression
• Both TDMoIP variants provide
• Transparency to standard and proprietary
  signaling including ISDN PRI, R2, EM, Q.Sig,
  DPNSS SS7
• Investment Protection migration to IP without
  compromising rich PBX features

• RAD is leading the industry in defining and
  implementing standards for TDM over IP and MPLS
  networks

4
TDMoIP (CV) Optimizes bandwidth by compressing
voice

• Compressed Voice and Group 3 Fax over IP, MPLS or
  TDM
• Compresses voice to below 4kbps / channel
• Voice activity detection, silence suppression
  comfort noise generation
• Superior toll quality voice
• Excellent alternative to VoIP
• Implemented in RADs Vmux product line

• Ideal for Remote Call Centers!

5
Benefits of TDMoIP (CV)

• Reduced Operating Expenses
• Less bandwidth required (up to 161 voice
  compression)
• Converge TDM IP traffic on common IP or TDM WAN
• Simple installation and maintenance
• Reduced Capital Expenses
• Preserves investment in Legacy PBX/ACD and TDM
  equipment
• RADs Vmux is less expensive than VoIP
  alternatives
• Addresses Business Concerns
• Maintains feature-rich PBX Features
• Evolutionary approach without the risk of
  fork-lift upgrades

6
Remote Call Center Applications

• Simple Voice Trunking over IP, Satellite or
  Leased Lines
• IP backup to T1/E1 link or vice versa
• Disaster Recovery via Voice Trunking to Mobile
  Contact Centers

7
Remote Call Center161 Voice Compression over
Satellite, IP or Leased Lines
Intelligence at HQ (Predictive dialing, ACD)
Remote Call Centers
Incoming or outgoing calls
Vmux-2100
T1/E1
T1/E1s
T1/E1
Media G/W or PBX
Ethernet
Vmux-2100
PBX or Telephony server
Channel Bank
Ethernet
Vmux-2100
T1/E1s

• Transparent to signaling protocols
• Supports range of remote call center applications
• Conserves bandwidth over Satellite, IP or leased
  lines.

8
Remote Call CenterIP backup to T1/E1 link or
vice versa
Incoming or Outgoing Calls From Main Site
Primary or Backup Link
Remote Call Centers
ACD/PBX
T1/E1
Vmux-2100
PSTN
Primary or Backup Link

• Vmux-2100 provides transmission facilities with
  IP or T1/E1 backup
• 161 compression delivers 60 voice channels per
  256 kbps (up to 384/480 POTS lines over single
  T1/E1)
• Load balancing between primary backup links
• Transparent to all signaling protocols

9
Remote Call CenterDisaster Recovery to Mobile
Contact Centers via Voice Trunking
Mobile Contact Center with Media Gateway or
PBX/ACD
Vmux-2100
Vmux-2100
T1/E1
T1/E1
T1/E1s ISDN PRI
T1/E1s ISDN PRI
Media G/W or PBX/ACD

• Enables disaster recovery contingency plan to
  deliver voice data to critical personnel when
  their normal place of operation becomes unusable
• Vmux-2100 provides simple T1/E1 connectivity to
  the PSTN over satellite
• 161 voice compression for efficient use of
  expensive satellite bandwidth
• Transparent to all signaling protocols (e.g.,
  ISDN PRI circuits)

10
TDMoIP (CV) Gateways Statistical Voice System
with 161 Compression

• Transparent to all standard proprietary
  signaling protocols
• CCS (SS7, PRI, Q.Sig., DPNSS, ) and CAS (DTMF,
  R2/MFC)
• Voice compression (G.723.1, G.729A and G.711)
  silence suppression
• Group 3 Fax relay (2.4 to 14.4 kbps) Modem
  support (Voice Band Data)
• Delivers excellent voice quality under severe
  network conditions
• No synchronization issues

• Vmux-110
• 1U high 9.5 wide
• T1/E1 and FXS voice interfaces
• User Ethernet (bridge) port
• IP and serial main-link options

• Vmux-2100
• Smallest footprint 16 T1/E1s in 1U
• Both IP and TDM main-link options
• Modular with redundancy options

11
Less Bandwidth Than VoIP In Voice Trunking
Applications
Less is Better
VoIP Wasted Bandwidth
Required Bandwidth kbps
Assumptions G.723.1 _at_ 5.3kbps, 50 Silence
Suppression
Number of Voice Channels
12
161 Voice Compression

• Vmux achieves 161 compression by
• Deploying standard compression algorithms G.711,
  G.729A G.723.1 (5.3 6.4 Kbps)
• Aggregating multiple channels into a single
  TDMoIP frame
• Frame size and packetizing intervals are user
  configurable
• TDMoIP multiplexing helps achieve up to 60
  better bandwidth utilization compared with VoIP
  solutions
• Voice/silence Activity Detection (VAD) that
  conserves bandwidth by preventing packets from
  being sent when silence is detected
• Comfort Noise Generation to give the listener the
  feeling that the call is still connected, as
  opposed to producing absolute silence

13
Breaking the Voice Quality Myth!!

• Typical MOS scores
• PCM (Uncompressed) 4.5
• ADPCM 32kbps (Toll Quality Voice) 4.0

• Vmux
• G.723.1 (_at_ 6.4kbps) scores 4.19
• G.729 (_at_8kbps) scores 4.3

MOS Mean Opinion Score of voice quality. A
MOS of 4.0 is considered toll quality.
14
VoIP vs. TDMoIP (CV)
The Clear Choice!
15
Where can I find out more?
www.TDMoIP.COM

• Products
• TDMoIP Gateway Family
• IPmux-1, IPmux-1E
• IPmux-16, IPmux-8
• Kilomux KML.11
• Megaplex ML-IP
• RADview Services Center TDMoIP
• Vmux-110
• Vmux-2100

• Solutions
• Remote call center solutions
• Service Providers
• Enterprise
• Utilities and Utelcos
• Education

• Info Center
• Presentations
• White Papers
• Case Studies
• Brochures
• Test Reports
• FAQ
• Technology 101

• News and Events
• Newsroom
• Events

16
How to Contact Us

• North America
• Pre-Sales Support
• Ms. Judi Aciego, [phone], prompt 1
• Email RCC_at_radusa.com
• VP General Manager, TDMoIP Technologies
• Mr. Eitan Schwartz, [phone] x247
• Eitan_at_radusa.com
• Rest of World
• Email market_at_rad.com