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For detailed installation instructions please see OpenR2 Libary Installation
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Additional Resources
Cisco E1 R2 signalling Theory page -> http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800943c2.shtml
Unicall MFC/R2 protocol module documentation -> http://www.soft-switch.org/unicall/mfcr2/index.html