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SIP deployment in LEARN

Nimal Ratnayake <nimalr@learn.ac.lk> Technical Manager, Lanka Educational and Research Network (LEARN) Senior Lecturer, Department of Electrical & Electronic Engineering, University of Peradeniya. SIP deployment in LEARN. Introduction. LEARN: Lanka Education and Research Network

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SIP deployment in LEARN

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  1. Nimal Ratnayake <nimalr@learn.ac.lk> Technical Manager, Lanka Educational and Research Network (LEARN)Senior Lecturer, Department of Electrical & Electronic Engineering, University of Peradeniya SIP deployment in LEARN

  2. Introduction • LEARN: Lanka Education and Research Network • Interconnecting academic/research institutions within Sri Lanka • Established in 1990 • Currently interconnects • 15 universities (22 campuses) • National Science Foundation • University Grants Commission

  3. SIP at Peradeniya • Implemented sip.edu • Integrated PBX and SIP based VoIP • Direct Inward Dialing from PSTN • SER for call routing • Asterisk for PBX features • ENUM lookup

  4. SIP at Peradeniya (2)

  5. Components used • Mostly Open Source SW • SER and Asterisk • Cisco 3640 w/ ISDN PRI link to PBX as gateway • Ericsson MD100 PBX with MFC R2 link to PSTN • OpenLDAP for campus directory • FreeRARIUS for authentication • MySQL for SER databases and accounting • Perl Scripts for LDAP Lookup/Call Logging • Cisco, Grandstream, LinkSys and x-lite UAs

  6. Accounting • Use MySQL for storing call logging from PBX and Cisco gateway • Two simple daemons written in Perl • Capture text call logging information from PBX • Capture Radius accounting packets from gateway • Both PBX and VoIP calls go to the same user account • Users can check their usage on line

  7. SIP in LEARN • Call routing between LEARN sites • SER for call routing

  8. ENUM • ENUM servers for country code 94 • 4.9.e164.arpa. • Applied for delegation • Access code 99 for ENUM trials • Used within LEARN • Service providers will be joining trial soon

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