E
E-CSCF (emergency CSCF)
233–4
E1 communication links
107 , 124–9 , 245–9 , 366–78
early media authorization
374–5
eBay
352
ECE
104
economies of scale
27–8 , 31
eCharts
70 , 81–2
echo cancellation
333–6
EchoServlet
78–80
economics
1–2 , 13 , 27–48 , 351–62 , 393–9 , 401–2 , 426–30
see also business models ; charging
capital goods software
27 , 32–48 , 81–104 , 401–2
economies of scale
13 , 27–8 , 31–2 , 34–5
factors of production
32–3 , 36 , 401–2 , 426–30
nexus of contracts
34–5 , 37–8
Open APIs
28–32 , 402–4
economies of scale
13 , 27–8 , 31–2 , 34–5
egress routing, BG
242–9
ELSE
90–3

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