The SIP Trunking Series IT Expo East January 25, 2007 Case Study SIP Trunking for Sterling National Bank Johnathan Maldonado Project Manager

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2 The SIP Trunking Series IT Expo East January 25, 2007 Case Study SIP Trunking for Sterling National Bank Johnathan Maldonado Project Manager

3 Overview SIP trunking terminating intralata, intrastate, interstate and international calls since July cost for calls has been reduced from approximately $1,500 per month to $500 per month.

4 Sterling National Bank New York City community bank Started in $2 billion in assets 600 employees 14 locations. Extremely competitive banking environment of New York City technology to reducing costs and offer unique products and services. clearing checks using the Internet request and receive certified checks through the Internet open source technology for telephone communications open source for office suite SIP termination. Presenter Johnathan has been with Sterling for 2 years and is responsible for SIP project.

5 Milestones 1970 Western Electric 1A2 Key System installed at Sterling s midtown New York City operations center Rohm/Siemens switch installed at Long Island, New York location 2003 Fall. Evaluation of SIP technology started with Digium digital board for PRI ISDN, Asterisk software and Grandstream SIP telephones February. Evaluation of Pingtel SIPxchange with Cisco voice enabled router and Grandstream and Cisco SIP phones March. Selected Pingtel because of GUI interface and Cisco voice enabled router because voice quality was excellent and no echo May. Installed system using Cisco phones connected to switches on existing LAN network for about 60 users February. Moved Pingtel system from Midtown New York City to Financial District New York City. Using Local Number Portability, we were able to retain our existing numbers Spring. Researched SIP termination with the assistance of Pingtel July. Installed Siparator to connect to Backbone Communications Inc. (BBCOM) for SIP termination of IntraLATA, Intrastate, Interstate and International calls November. Replaced Rohm/Siemens switch in Long Island, New York with Pingtel SIPxchange November. Installed SIParator in Long Island, New York to connect to Backbone Communications Inc. (BBCOM) for SIP termination of IntraLATA, Intrastate, Interstate and International calls December. Installed a number of support staff extensions at their homes using SIParator.

6 History Western Electric 1A2 Key system Multi line Western Electric key sets central control unit 25 pair cable for each phone Key Telephone Units(KTU). expensive centrex. good features

7 Pingtel. Boston VOIP show GUI interface Pingtel's evaluation kit Cisco voice enabled router Cisco SIP phones Verizon PRI ISDN. No echo. switches Announced Open Source Research in 2003 Internet trade shows Cisco. Skinny Call Control Protocol (SCCP) Digium. evaluation kit Verizon PRI ISDN Grandstream SIP phones Echo

8 SIP Termination Project Goal Reduce charges for IntraLATA, Intrastate, Interstate and International minutes. Pilot 70 users located in New York City Financial District. Process Identify SIP Termination Services and evaluate based on: A. Reliability B. Quality of Service C. Pricing for IntraLATA, Intrastate, Interstate and International minutes D. Internet based to avoid separate DS1/DS3 E. Local Point of Presence (POP) to reduce latency F. Interop with Pingtel SIPxchange and Ingate SIParator Selected BBCOM.

9 Connect Pingtel SIPxchange and Ingate SIParator to BBCOM With assistance from all three vendors, we: A. Purchased SIParator from Ingate B. Configured SIParator C. Configured SIPxchange dial plan to allow routing via access code of IntraLATA, Intrastate, Interstate and International calls to BBCOM with 911 and backup routing to Verizon. From Test to Production A. Test was successful. B. Changed dial plan to automatically route IntraLATA, Intrastate, Interstate and International calls to BBCOM with backup to Verizon. C. Implemented second location in Long Island with 70 users.

10 Issues Overcame A. Loss of BBCOM service. dial plan automatically routed the calls through Verizon. B. part of an area code was not working. BBCOM resolved these issues in a timely fashion. C. could not transfer an outgoing call to another internal user. Ingate enhanced SIParator software

11 Return on Investment incremental cost less than $2,000 monthly savings at the Financial District location was a $1,000. Payback was less than 2 months

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