O
O&M
15
O2
28
OAuth API
97–104
OCS (Online Charging System)
359–62
offline/online charging models
357–62
OK
85–93
,
97–104
,
151–7
,
189–97
,
205–9
,
211–22
,
244–9
,
251–69
,
270–85
,
315–16
,
318–20
,
343–6
,
359–62
,
368–78
,
380–400
,
409–14
,
421
,
424–5
OLCM
294–8
oligopolies
28
OMA (Open Mobile Alliance)
15
,
20–1
,
49–58
,
336
,
337–46
,
402–5
,
414–30
,
450
see also
presence
OMA CPM
416
OMA Presence
417
one call half SIP-AS interactions
299–300
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