PSQM+ (Perceptual Speech Quality Measurement plus)

An enhanced version of PSQM devel-

oped to measure the effects of packet loss and other network impairments on compressed real-time voice transmission. See also PSQM.

• dedicated circuit
• DE (Discard Eligible)
• de facto
• Defense Advanced Research Project Agency Network (DARPANET)
• Defense Data Network (DDN)
• de jure
• delay
• delay skew
• delay spread
• delta modulation
• demand assigned multiple access (DAMA)
• demarcation point
• demarc (demarcation point)
• demod/remod (demodulation/remodulation)
• demodulate
• dense wavelength division multiplexing (DWDM)
• DES (Data Encryption Standard)
• deterministic
• DFB laser (Distributed FeedBack laser)
• DFB laser (Distributed FeedBack laser)
• DFB laser (Distributed FeedBack laser)
• DFS (Dynamic Frequency Selection)
• DG XIII (Directorate General XIII)
• DHCP (Dynamic Host Configuration Protocol)
• dial