E

E911 (see Enhanced 911)

E-CSCF (Emergency CSCF), 211

EDGE (see Enhanced Data rates for Global Evolution)

Edge switches, 100, 102

802.11 standard (see IEEE 802.11)

802.16 standard (see IEEE 802.16)

Ellipse (uncertainty), 40f, 41, 43

Ellipsoid (uncertainty), 40f, 42–43

Emergency applications, 127–133

hosted voice server for, 127–133

with implicit location reference, 131–133

with literal location, 128–130

with location URI, 130–131

"Emergency Call Service Location Identifier Discovery Extension," 117

Emergency CSCF (E-CSCF), 211

Emergency services, 3–9

cellular network architecture for, 4–6

consent issues with, 238

gateway mobile location center in, 5, 6

Global System for Mobile Communications for, 5–6

location determination for, 6–9

location requests by, 234, 235

networks for, 5, 6

nomadicity and mobility affecting, 15

spoofing locations in, 18f

jurisdictionalCivic addresses, 75

uncertainty/confidence calculation in, 12, 13

Encryption, 51

End-to-end network location service, 20–21

Enhanced 911 (E911), 4–9

automatic location identification in, 4

automatic number identification in, 308

in cellular networks, 4

defined, 310

FCC requirement for, 4

and IP location development, 3

and voice over IP, 13–15

Enhanced Data rates for Global Evolution (EDGE):

defined, 310

GPRS for, 196

Enterprise networks, 99–133

bridge MIB interrogations in, 102–108

components of, 99

data management, 124

DHCP relay location determination in, 108–113

firewalls, 121–124

LIS in, 121–124

location acquisition protocols for, 113–121

location applications for, 124–133

Network Address Translations, 121–124

Virtual Private Networks, 121–124

WiFi networks, 101–102

wired ethernet networks, 99–100

Enveloped signature, 290

Ephemeris, 228

ERR (error) message, 251

Error handling, in BEEP, 251

Error indication, in FLAP, 255

Error (ERR) message, 251

Error reporting, 89–90

Ethernet ALE notification, 59

Ethernet switch:

access information, 271

technology extensions, 271–274

terminal identification, 271

European Telecommunication Standards Institute (ETSI), 310

European Union's Galileo, 226–228

EVDO (see 1x Evolution Data Optimized)

Evolution Data Optimized (see 1x Evolution Data Optimized)

exact Qualifier, 76

Explicit permission (explicit consent), 234

Extensibility, of HELD, 119

extensible Markup Language (XML):

for BEEP, 250–251

character coding for, 250

defined, 310

and digital signatures, 292–294

and Flexible LIS-ALE Protocol, 250–251, 262–267

namespace declaration type definition for, 59

domain-auth element, 292–294

External IP address determination, 91–93

<External-ruleset>, 83