Where IP Gateways Fail How to Transition Painlessly from PBX to VoIP Asterisk is a registered trademark of Digium, Inc.
Agenda Moving to VoIP Drivers & Obstacles IP Gateway Approach Transitional Approach A Few Facts About Asterisk Where Xorcom Comes In Summary of Key Points
Drivers for Moving to VoIP Lowering communication costs Support for remote extension(s) Remote/branch IP-PBX networking capabilities Adding local SIP phone sets Inclusion of soft phones in the network Improved availability of workforce Road warriors Teleworkers
Obstacles to Moving to VoIP Finance Department If it ain t broke, don t fix it! Equipment costs lost assets Legacy PBX & phones Operations Department Fear factor (unknown technology) Infrastructure hassle and system downtime Middle Management Employee learning curve resource waste Employee resistance to new methods
IP Gateway Approach Purchase IP Gateway for IP connectivity (typically 2 legged: PBX + IP) Benefits Works alongside existing legacy PBX Low cost well-known solution Method Configuring/connecting the gateway IP settings PBX settings PSTN settings (if required)
IP Gateway Approach Diagram PSTN Headquarters Remote Worker VoIP Provider PRI WAN PSTN Legacy PBX PRI IP Gateway PRI Legacy PBX PRI IP Gateway Analog Phones Analog Phones Remote Office
IP Gateway: Disadvantages Solves single issue: IP connectivity (temporary) Closed system; not flexible/not upgradable Limited solution; it becomes redundant when an IP-PBX is implemented Different products for HQ and remote offices; could lead to compatibility issues Will never replace the PBX, so maintenance fees and utilities costs are ongoing and worst of all
Transitional Approach Highlights Get all the benefits of the IP Gateway, plus Dozens of IP-PBX features, including: IVR system Voice mail, Voice mail to e-mail Conference bridge IP trunks (low cost telephony providers) Additional extensions (analog, IP) Fax-to-mail and best of all
Transitional Approach Overview Three Phases: A. Add IP Phones + Remote IP-PBX (3 legged: PBX, PSTN, IP/LAN/WAN) B. Add more ports and trunks C. Disconnect the legacy PBX
Transitional Approach: Phase I Add IP-PBX risk-free Integrates into existing system via PRI 3-legged solution: PBX, PSTN, IP/LAN/WAN Operates as a smart gateway Provides connection to: remote offices tele-workers telephony providers (SIP trunk) all IP-PBX features
Transitional Approach: Phase I PSTN IP-PBX Headquarters Remote Worker WAN VoIP Provider PRI LAN PSTN IP-PBX Legacy PBX IP Phones PRI Legacy PBX Analog Phones Analog Phones Remote Office
Transitional Approach: Phase II Add more ports/trunks as needed Analog ports for analog telephone sets Analog trunks for additional PSTN lines PRI/BRI ports for additional digital lines
Transitional Approach: Phase II Add l Trunks PSTN IP-PBX Headquarters Remote Worker WAN VoIP Provider PRI LAN PSTN IP-PBX Legacy PBX IP Phones PRI Legacy PBX Analog Phones Analog Phones Analog Phones Remote Office
Transitional Approach: Phase III Once confidence in the system is complete, eliminate the legacy PBX Maximize the cost savings No more legacy PBX maintenance fees Reduced utilities (A/C, power, space, etc.)
Transitional Approach: Phase III Add l Trunks PSTN IP-PBX Headquarters Remote Worker WAN VoIP Provider FXS PRI LAN PSTN IP-PBX Legacy PBX IP Phones PRI FXS Legacy PBX Analog Phones Analog Phones Analog Phones Remote Office
Comparison of Approaches IP Gateway Approach Solves single issue: IP connectivity (temporary) Closed system = not flexible/not upgradable Limited solution = becomes redundant when IP-PBX is implemented Different products for HQ and remote offices Will never replace the PBX, maintenance fees and utilities costs are ongoing Transitional Approach Solves multiple issues: full IP- PBX functionality Open system = continually being enhanced Evolving solution = provides leading-edge telephony when you decide Same products for HQ and remote offices Replaces the PBX at any time, eliminating maintenance fees and utilities costs
Powerful Open-Source Engine Asterisk is a registered trademark of Digium, Inc.
A Few Facts About Asterisk Robust and accepted platform Jan 09 report: 18% of 2008 installs (http://www.easternmanagement.com/pbx.htm) Most popular open-source OS for telephony (85% share) Worldwide body of avid developers Minimal $$ needed to start; higher flexibility Open Source PBXs typically cost ~40% less than conventional telephone systems Simple to integrate s/w applications
IP-PBX Features (partial list) User-friendly Web Interface Interface in Different Languages Unlimited Extensions CDR (Call Details Record) TDM/SIP/IAX Trunks Remote Extensions Voicemail Fax Support Voicemail to Email IVR Menu System Ring Groups Call Queues Conference Rooms Follow-Me Time-Based Routing Advanced Dialing Rules Music On Hold Paging and Intercom Web Access to Voicemail Admin Status Screen Package Manager (for easy updates) Phone Provisioning Tool Network Settings Tool Echo Cancellation - OSLEC (Open Source Line Echo Cancellation)
Xorcom IP-PBX Models Supported Functionality XR1000 XR2000 XR3000 FXS Ports Up to 16 Up to 32 Up to 32 FXO Ports Up to 16 Up to 32 Up to 32 Analog Ports (multiple units) Up to 16 Up to 160 Up to 670 PRI/R2 Ports -- 1 Up to 4 BRI Ports Up to 8 Up to 8 Up to 8 Total Users 50 300 1000 Concurrent Calls 5 60 300 SIP/IAX Registered Users Up to 50 Up to 300 Up to 1000 RAID1 Support No Yes Yes
XR1000: Optimized for SOHO Stand-alone Asterisk-based IP-PBX Up to 16 telephony ports: FXO/FXS/BRI Up to 5 concurrent calls; 50 users Remote access Built-in echo-cancellation XR1000
XR2000: IP-PBX for SMB Stand-alone Asterisk-based IP-PBX Up to 32 telephony ports: Up to 32 FXO Up to 32 FXS 1 E1/T1 PRI/R2 Up to 8 BRI ISDN (NT/TE configurable) Up to 4 additional analog Astribank units (4x32)+32=160 Up to 300 IP users (SIP/IAX) Up to 60 concurrent calls; 300 users Built-in echo-cancellation RAID1 option (dual HDD redundancy) + Remote access XR2000
XR3000: IP-PBX for Enterprise Stand-alone Asterisk-based IP-PBX Up to 32 telephony ports: Up to 32 FXO Up to 32 FXS Up to 4 E1/T1 PRI/R2 Up to 8 BRI ISDN (NT/TE configurable) Up to 20 additional analog Astribank units (20x32)+32=672 Up to 1000 IP users (SIP/IAX) Up to 300 concurrent calls; 1000 users Built-in echo-cancellation RAID1 option (dual HDD redundancy) + Remote access XR3000
High Availability Solution for Asterisk Provides full redundancy for a complete PBX system, incl. telephony interfaces Quick and automatic failover process keeps downtime to an absolute minimum Auto detection of server failure & switch to backup server Firmware-based switching mechanism is not network-dependent TwinStar solution components: XPP Technology two Asterisk-based IP PBX units with identical configurations Xorcom Astribank channel bank(s) with dual USB ports
TwinStar Demo
Summary of Key Points IP Gateway Approach Solves single issue: IP connectivity (temporary) Closed system = not flexible/not upgradable Limited solution = becomes redundant when IP-PBX is implemented Different products for HQ and remote offices Will never replace the PBX, legacy maintenance fees and utilities costs are ongoing Transitional Approach Solves multiple issues: full IP- PBX functionality Open system = continually being enhanced Evolving solution = provides leading-edge telephony when you decide Same products for HQ and remote offices Replaces the PBX at any time, eliminating legacy utilities costs & maintenance fees
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