IMS Application Developer's Handbook

U

UAA (user authorization answer)

254–69

UACs (user agent clients)

77–80 , 148–222 , 294–5 , 300 , 303–4 , 312–16 , 327–8 , 393–400

UAR (user authorization request)

254–69

UAs (user agents)

77–80 , 146–222 , 252–69 , 274–85 , 325–8 , 360–2

see also transaction models ; UE

UASs (user agent servers)

77–80 , 148–222 , 282–5 , 294–5 , 300 , 303–4 , 327–8 , 393–400

UDI

127–9

UDP

110–17 , 119–43 , 163–83 , 194 , 196–7 , 218–22 , 232 , 242–9 , 252–69 , 272–85 , 366–78 , 413–14

UE (user equipment)

147 , 226–328 , 363–400 , 417 , 435–47

see also Gm… ; IP… ; P-CSCF ; UAs ; user plane

UMA (Unlicensed Mobile Access)

3–4

UML Statecharts language

70 , 81–2

UMTS

105 , 107–9 , 136–43 , 250–1 , 390–2 , 431–47

Unauthorized ...