Technical Strategy Secure SIP Trunking in Legacy PSTNPBX

Technical Strategy: Secure SIP Trunking in Legacy PSTN/PBX Environments Rich Poole Dialogic rich. poole@dialogic. com Scott Beer Ingate scott@ingate. com September 2, 2009 The SIP Trunking Enabler

Agenda § How Are Gateways Used Today? § What Does A Gateway Do? § SIP Trunking Deployment – Issues & Options § Gateway Installation & Configuration Slide 2 © Copyright 2009 Dialogic Corporation. All rights reserved.

How Are Gateways Used Today? Select Use Case Examples § Distributed IP Voice Messaging § Distributed IP Contact Center § Unified Communications: § § – – Microsoft Office Communications Server 2007 IBM Lotus Sametime Unified Telephony Motorola Total Enterprise Access & Mobility Asterisk Business Edition Fax over IP SIP Trunking Slide 3 © Copyright 2009 Dialogic Corporation. All rights reserved.

How are Gateways Used in the Enterprise? IP Voice Messaging Use Case* Centralized Messaging / IVR Digital Station Phones Brussels LAN T 1 Media Gateway Digital Station Emulation Media Gateway Nortel Meridian Munich WAN Avaya G 3 PBX E 1 Media Gateway Legacy Phones PSTN Legacy Phones Analog Media Gateway Stockholm Headquarters Siemens Hicom Ericsson MD 110 Legacy Phones Remote Offices * - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 4

How are Gateways Used in the Enterprise? Distributed IP Contact Center Use Case* Media Gateway * - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 5

How are Gateways Used in the Enterprise? Microsoft® Office Communications Server 2007 Use Case* MS UC Mediation Server Basic Media Gateway legacy PBX OCS Server(s) “Tanjay” phones PSTN Active directory Basic Hybrid Media Gateway Microsoft® Office Communicator 2007 * - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 6

How are Gateways Used in the Enterprise? IBM® Lotus® Sametime® Unified Telephony Use Case* T 1/E 1 * Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide. Slide 7 © Copyright 2009 Dialogic Corporation. All rights reserved.

How are Gateways Used in the Enterprise? Motorola TEAM (Total Enterprise Access & Mobility) Use Case* “The TEAM Vo. WLAN solution turns the desktop into a pocketable virtual office. ” www. motorola. com Slide 8 • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved.

How are Gateways Used in the Enterprise? Media Gateway + Asterisk Business Edition Use Case* Asterisk Business Edition Media Gateways Enable Applications Built on Asterisk Business Edition Allows Asterisk Developers to Augment Existing PBX Functionality * - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide Slide 9 © Copyright 2009 Dialogic Corporation. All rights reserved.

How are Gateways Used in the Enterprise? Fo. IP Server Solution Use Case* – Enables Fo. IP Server in TDM and Hybrid PBX Environment – Enables Fax Server to be Deployed as a Virtual Server – Enables Centralized Fax Servers for Multi-Site Organizations T. 30 Fax T. 38 Fo. IP Media Gateway PSTN Fo. IP software-based Fax Server PBX Media Gateway WAN Remote Site PBX • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 10

How are Gateways Used in the Enterprise? SIP Trunking for Legacy PBX and Contact Centers IP Telephony Service Provider IP Network SIP Trunking Service Firewall Broadband Internet Access PSTN Service Provider Gateway Border Element Circuit Switched Voice Access (Optional) Circuit Switched Voice Access Corporate Voice and Data LAN Legacy PBX with system phones Vo. IP Gateway • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 11

What does a Gateway Do? Slide 12 © Copyright 2009 Dialogic Corporation. All rights reserved.

What does the Gateway do? -Inputs/Outputs IP Telephony Service Provider IP Network SIP Trunking Service Firewall Broadband Internet Access TDM Interface Transport: T 1 or DS 3 PSTN [Dig. Station Emulation, Analog] Service Provider Signaling: ISDN PRI, QSIG Circuit Switched Gateway Voice Access [CAS, Serial (SMDI, MCI, MD-110)] (Optional) Voice: PCM Border Element Circuit Switched Voice Access Corporate Voice and Data LAN Vo. IP Gateway IP Interface: Transport: IP Signaling: SIP over UDP, TCP (or TLS) Voice: G. 7 xx over RTP/RTCP (or s. RTP) Qo. S: Diff. Serv Legacy PBX with system phones Management Interface: Config: HTTP (or HTTPs) Web GUI [Telnet, Serial, RS-232] Event Mgt. : SW Mgt. : SNMP, SMTP Boot. P, TFTP • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 13

What does the Gateway do? -Internal Bearer Processing: IP Telephony Voice: - G. 711, G. 729 AB, G. 723. 1, etc. Service Provider - G. 168 Echo Cancellation - VAD, SS, CNG IP Network PSTN - [other codecs] Tones: - DTMF Digit Relay (RFC 2833 or SIP Info) - Call Progress Detection (PVD, PAMD, DTMF, Fax Service Provider Tone, Progress Tone, …) Circuit Switched Gateway Broadband SIP Fax: - T. 38 Fax over IP, G. 711 Fax Bypass (T. 30/G. 711) Voice Access Internet Trunking Service (Optional) Access Border Element Firewall Circuit Switched Voice Access Corporate Voice and Data LAN Vo. IP Gateway Transport Mediation: Transport: TDM-to-SIP TDM-to-TDM SIP-to-SIP Legacy PBX with system phones Additional Controls: - Gain Control for IP-TDM & TDM-IP - Echo Cancellation Parameter - Voice Activity Filters - Call Progress Filters • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 14

What does the Gateway do? -Internal Processing IP Network SIP Trunking Service Supplementary Services: IP Telephony - Hold/Un. Hold Service Provider - Call Transfer - Blind Transfer PSTN - Supervised Transfer - Message Waiting Indicator (MWI) - ANI / DNIS / Call Diversion Info Service Provider - CPID Gateway Broadband Internet Access Border Element Firewall Circuit Switched Voice Access (Optional) Circuit Switched Voice Access Corporate Voice and Data LAN Call Routing: - Digit Manipulation - Call Routing Engine - Alternate Routing for TDM & IP - Trunk Group Management - IP Route Management Vo. IP Gateway Legacy PBX with system phones Call Processing: - Call Setup/Teardown - Codec Negotiation - Fax Negotiation - DTMF Digit Relay • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 15

SIP Trunking Deployment Issues & Options Slide 16 © Copyright 2009 Dialogic Corporation. All rights reserved.

How are Gateways Deployed for SIP Trunking? § Issues: – Do I need to move all communciations to SIP? – How do I handle multiple offices & optimize deployments? – Bandwidth Requirements • How much is used already for data • Need to prioritize voice (more real-time) – Gateway & PBX Interop – Availability Considerations • Multiple Gateways • Alternate Routing • Failover upon power failure – How do you handle Fax? Slide 17 © Copyright 2009 Dialogic Corporation. All rights reserved.

Evolution of IP Fax (Fo. IP) § T. 37 – Store and forward – Scan image, attach to email, and send – Not real time – no receipt confirmation § G. 711 Pass Through – Encode fax audio for IP transport – Heavy bandwidth requirements – Susceptible to latency – high failure rate § T. 38 Fo. IP – Created by the ITU to resolve the above issues Slide 18 © Copyright 2009 Dialogic Corporation. All rights reserved.

T. 38 – Reliable IP Fax: § Standard for real time IP Fax defined by ITU § Widely adopted by router manufacturers § Resolves latency issue that plagues G. 711 § Uses much less bandwidth – ~ 35% of the bandwidth required by G. 711 § Preserves user experience – Positive receipt confirmation § Compliant to industry standards – Not T. 37 store and forward as an email attachment § Dialogic was a primary contributor to the T. 38 spec Slide 19 © Copyright 2009 Dialogic Corporation. All rights reserved.

Legacy Configuration Use Case* IP Network PSTN Circuit Switched Trunking Broadband Internet Access Firewall Legacy PBX Corporate LAN • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 20

SIP Trunking for Legacy PBX and Contact Centers Phased SIP Trunking – Outbound Only Use Case* IP Telephony Service Provider PSTN IP Network Outbound Firewall Outbound traffic: Routed through SIP Trunking Corporate Voice and Data LAN Inbound traffic: Continues to be routed to PSTN Fax: Routed through PSTN-Vo. IP Circuit Switched Voice Access Fax Service Provider Gateway Inbound SIP Trunking Service Broadband Internet Access Border Element Legacy PBX Gateway • Routing outbound calls to SIP Trunks could lower costs* • Route outbound traffic to Gateway (except from Fax extensions) • PSTN connection still available as alternate route for outbound traffic* * Requires program change to PBX) • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 21

SIP Trunking for Legacy PBX and Contact Centers Phased SIP Trunking – PSTN Alt Route Use Case* IP Telephony Service Provider PSTN IP Network Firewall Al Outbound Inbound t R ou te x Service Provider Gateway Fa SIP Trunking Service Broadband Internet Access Border Element Circuit Switched Voice Access Legacy PBX Corporate Voice and Data LAN Outbound traffic: Routed to SIP Trunking Inbound traffic: Routed to SIP Trunking PSTN-Vo. IP Gateway Fax: Routed through Gateway to/from PSTN • No or minimal change to PBX • Legacy PSTN available as Alternate Route for overflow traffic or as backup to SIP Trunks (IP or Power Failure) • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 22

SIP Trunking for Legacy PBX and Contact Centers Full SIP Trunking Solution Use Case* IP Telephony Service Provider PSTN IP Network SIP Trunking Service Firewall Broadband Internet Access Border Element Service Provider Gateway Outbound Inbound Fax Circuit Switched Voice Access Legacy PBX Corporate Voice and Data LAN Outbound traffic: Routed to SIP Trunking PSTN-Vo. IP Inbound traffic: Routed to SIP Trunking Gateway Fax: Routed through Gateway • No or minimal change to PBX • Disconnection from legacy PSTN – lower costs • T. 38 is preferred for fax, but G. 711 Fax Relay may be acceptable • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 23

SIP Trunking for Legacy PBX and Contact Centers Remote Office SIP Trunking - Centralized Use Case* PSTN IP Telephony Service Provider IP Network Legacy PBX Circuit Switched Voice Access Remote Office Corporate Voice & Data LAN SIP Trunking Service Broadband Internet Access Border Element Firewall Corp Intranet Corporate Voice & Data LAN • Corporate traffic over Intranet – lower costs • Concentrate PSTN access through SIP Trunks • Optional Remote PSTN Access through gateway • Reduced remote legacy PSTN – lower costs PSTN Circuit Switched Voice Access Legacy PBX Vo. IP Gateway • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 24

SIP Trunking for Legacy PBX and Contact Centers Remote Office SIP Trunking – Distributed Use Case* IP Telephony IP Network Service Provider PSTN IP Network SIP Trunking Service Broadband Internet Access Remote Office Corporate Voice & Data LAN Border Element Corp Intranet Corporate Voice & Data LAN Circuit Switched Voice Access Legacy PBX Vo. IP Gateway • Corporate data traffic over Intranet • Leverage ITSP Network with remote SIP Trunks • Remote PSTN available through gateway, if needed • - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 25

Gateway Installation & Configuration Slide 26 © Copyright 2009 Dialogic Corporation. All rights reserved.

Installation Summary § Connection to PBX • Connect Gateway to PBX • Configure PBX to send calls to Gateway • Configure Gateway to connect to PBX § Connection to LAN • Connect Gateway to LAN • Configure SIP Trunking Provider to connect to Gateway • Configure Gateway to connect to SIP Trunking Provider § Test connections to PBX and SIP Trunking Provider Slide 27 © Copyright 2009 Dialogic Corporation. All rights reserved.

Gateway Configuration § Simplified Configuration Management & Troubleshooting • Use Serial Cable or Telnet to GW; Login; run ‘quickcfg’ • Set IP Address / Subnet for Gateway & Default Network Gateway • Set T 1/E 1 & PBX Signaling Type (ISDN / CAS) Initial Config • Restart Gateway Web GUI • Login to Gateway • Disable Boot. P (else GW gets IP Addr from DHCP Server) • Set PCM Coding – µLaw (T 1) , a. Law (E 1) • Per span, set Line Encoding & Framing (e. g. : B 8 ZS & ESF) • Per ISDN span, set to “Network” or “Terminal” (Opposite of endpoint) TDM Config • Enable “Failover” if Gateway is between PBX & PSTN • Set IP Transport to UDP, TCP (or TLS) • Set Audio Compression – G. 711 -µLaw , G. 711 -a. Law, … • Set VAD on/off Vo. IP Config • Set RFC 3960 Early Media on Routing Config Restart Gateway • Set up TDM Trunk Group(s) (e. g. PSTN, PBX, etc. ) • Set up Vo. IP Host Group(s) (IP Endpoints) • Config Inbound TDM rules per Trunk Group – Specify Routing & Normalization • Config Inbound Vo. IP rules per Vo. IP Host Group & Number Normalization • Make Connections • Use built-in Trace Tools, Wireshark, . . . to verify properation • Ready to use Slide 28 © Copyright 2009 Dialogic Corporation. All rights reserved.

Summary 89% Growth! + § SIP Trunking demand is accelerating and moving upstream from SMB to the Enterprise § Ingate SIParator® and Ingate Firewall® products provide a secure, scalable and interoperable enterprise edge for SIP Trunking Services § Dialogic provides enterprise class media gateways to enable SIP trunking for legacy PBX and contact centers § Ingate and Dialogic provide interoperable products that enable a rapid return on investment from SIP Trunking deployments § SIP Trunk adoption moves an enterprise towards richer multi-media and unified communications services across public IP networks Slide 29 © Copyright 2009 Dialogic Corporation. All rights reserved.

Questions? § For more information visit: – www. dialogic. com/solutions/uc/ingate. htm – www. dialogic. com/products/gateways/ – www. ingate. com … or contact us directly • • Rich Poole: rich. poole@dialogic. com Scott Beer: scott@ingate. com Thanks for attending! Slide 30 © Copyright 2009 Dialogic Corporation. All rights reserved.

Dialogic, Dialogic Pro, Brooktrout, Diva, Cantata, Snow. Shore, Eicon Networks, NMS Communications, NMS (stylized), Eiconcard, SIPcontrol, Diva ISDN, Tru. Fax, Exnet, EXS, Switch. Kit, N 20, Making Innovation Thrive, Connecting to Growth, Video is the New Voice, Fusion, Vision, Packet. Media, Natural. Access, Natural. Call. Control, Natural. Conference, Natural. Fax and Shiva, among others as well as related logos, are either registered trademarks or trademarks of Dialogic Corporation or its subsidiaries (“Dialogic”). Ingate, Ingate Firewall, and Ingate SIParator are registered trademarks of Ingate Systems AB. Other names of actual companies and products mentioned herein are the trademarks of their respective owners. Dialogic encourages all users of its products to procure all necessary intellectual property licenses required to implement their concepts or applications, which licenses may vary from country to country. Dialogic may make changes to specifications, product descriptions, and plans at any time, without notice. USE CASE(S) Any use case(s) shown and/or described herein represent one or more examples of the various ways, scenarios or environments in which Dialogic products can be used. Such use case(s) are non-limiting and do not represent recommendations of Dialogic as to whether or how to use Dialogic products. 06/09 www. dialogic. com © Copyright 2009 Dialogic Corporation. All rights reserved. Slide 31