l employed) proxy CSCF (P-CSCF) 401, 420 100, 105, 107, 124-126, 133, proxy firewall 206, 275, 400 136, 145, 147, 177, 222, 228, PSC 336 248, 297, 332, 351, 352, 359, 296, 299 361, 371, 430, 438, 446, 448, 465, 471, 473 Index ROHC 167, 236, 248, 258, 484 service description protocol (SDP) ROI 100, 438, 465, 471 service enabler 14, 69, 79-81, 88, round trip delay 234, 235 160, 165, 184, 222, 249, 250, round trip time, (RTT) 234 259, 260, 262, 289, 292-294, routing information protocol (RIP) 305-307, 316, 317, 329, 445, 342, 343 460, 461 RSVP 53, 96, 97, 240-242, 245, 262, service layer 4, 14, 63, 65, 70-72, 316, 344, 392, 453 78, 81, 83, 121, 183, 184, 222, RSVP-TE 344, 348, 350 254, 258, 259, 262, 263, 267, RTCP 79, 237, 238, 271, 316, 326, 286-288, 296, 297, 305, 307, 385, 386, 411, 436, 443-445 76, 79, 83, 237, 238, 270, 316, service level agreement (SLA) 19, 325, 326, 392, 403, 417 105, 109, 115, 133, 230, 267, RTSP 79, 237-239, 271, 316, 326, 346, 411, 415 service level specifications (SLSs) service management 72, 79, 150, S/MIME 214, 219 287, 296, 297, 303, 432, 439, 443 97, 254, 294 service provider 12, 18, 31, 32, 39, 47, 57, 61, 63, 101, 103, SCCP user adaptation layer (SUA) 109-111, 115, 120, 121, 126, 154, 160, 175, 177, 183, 184, SCM 39, 286 262, 289, 295, 303, 399, 416, SCP (service control point) 56, 250, 417, 460, 463 275, 386 service-oriented architecture 459-461 14, 80, 97, 292, 293 service-oriented programming 13,88 serving CSCF (S-CSCF) 400 97, 404-406 serving GPRS support node (SGSN) 79, 83, 96, 195, 267, 270, 392, 218, 245, 246, 250, 280, 282, 283, 325, 368, 386, 397-399, SDSL 357, 376 402, 418-420 secure shell (SSH) 212 session description protocol (SDP) secure socket layer (SSL) 198, 263, 267, 269, 393 session initiation protocol (SIP) security function 30, 189, 269, 328, 391, 392 218, 280, 301, 308, 327, 407, 426 session management 139, 280, 398 security gateway 301 SGSN 218, 245, 246, 250, 280, 282, security plan 91, 187, 196, 389 283, 325, 368, 386, 398, 400, serialization process 232 403