1. Jacobson V. "VAT manual pages" Lawrence Berkeley Laboratory Feb. 1992; www.nrg.ee.lbl.gov/vat/.]] Jacobson V. "VAT manual pages" Lawrence Berkeley Laboratory Feb. 1992; www.nrg.ee.lbl.gov/vat/.]]
2. Hardman V. Kinstein P. Sasse A. and I. Kouvelas "Robust Audio Tool (RAT)" www-mice.cs.ucl.ac.uk/multimedia/software/rat/index.htm.]] Hardman V. Kinstein P. Sasse A. and I. Kouvelas "Robust Audio Tool (RAT)" www-mice.cs.ucl.ac.uk/multimedia/software/rat/index.htm.]]
3. ITU-T Recommendation G.107 "The E-Model a computational model for use in transmission planning" December 1998.]] ITU-T Recommendation G.107 "The E-Model a computational model for use in transmission planning" December 1998.]]
4. "The Cisco-Voice-Dial-Control-MIB" CiscoSystems Inc. ftp://ftp.cisco.com/pub/mibs/v2.]] "The Cisco-Voice-Dial-Control-MIB" CiscoSystems Inc. ftp://ftp.cisco.com/pub/mibs/v2.]]
5. "The Telchemy monitoring agent" Telchemy Inc. www.telchemy.com.]] "The Telchemy monitoring agent" Telchemy Inc. www.telchemy.com.]]