Switching to VoIP

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s extension, Asterisk

S100I interface card

Safari Enabled, books designated as

safe_asterisk script 2nd

sampling 2nd

sampling frequency

save dialplan command, Asterisk CLI

SAY NUMBER command, AGI

SayAlpha command, Asterisk

SayDigits command, Asterisk

SayNumber command, Asterisk

SayPhonetic command, Asterisk

SayUnixTime command, Asterisk

scalability

        of PSTN

        of VoIP 2nd 3rd

SCCP (Skinny Client Control Protocol) 2nd

        Asterisk CLI commands for

        features of

        in VoIP routers

SDP (Session Description Protocol) 2nd

        capabilities negotiation for

Secure Real Time Transport Protocol (SRTP) 2nd 3rd

security

        access control

        authentication

        book about

        credentials

        dial-plan configuration

        DMZ for

        DoS (denial of service) attack

        firewall

        for IP telephony

        for PSTN

        hardening VoIP servers

        intrusion prevention

        logging

        malware

        man-in-the-middle attack

        media encryption

        monitoring

        of VPN

        physical presence policies

        port restrictions

        port scans

        PSTN attacks on IP network

        risks to, list of

        rule-based firewalls

        software bugs affecting

        Trojan horses

        UDP, unencrypted

        voice spam

SEND TEXT command, AGI

SendDTMF command, Asterisk

SendText command, Asterisk

SendURL command, Asterisk

SER (SIP Express Router) 2nd

Series 2 TiVo devices

servers, vendors for

service provider cost savings

service providers

service-level agreement (SLA)

        for MOS

        for QoS

session layer, OSI model

SET CALLERID command, AGI

SET CONTEXT command, AGI

SET EXTENSION command, AGI

SET VARIABLE command, AGI

set verbose command, Asterisk CLI

SetAccount command, Asterisk

SetCallerID command, Asterisk

SetCDRUserField command, Asterisk

SetCIDName command, Asterisk

SetCIDNum command, Asterisk 2nd

SetGlobalVar command, Asterisk

SetLanguage command, Asterisk

SetMusicOnHold command, Asterisk

SetVar command, Asterisk 2nd

SetVar command, Asterisk Manager API

shell access, disabling

show agents command, Asterisk CLI

show agi command, Asterisk CLI

show application command, Asterisk CLI

show applications command, Asterisk CLI

show channel command, Asterisk CLI

show channels command, Asterisk CLI

show codecs command, Asterisk CLI

show dialplan command, Asterisk CLI 2nd

show indications command, Asterisk CLI

show keys command, Asterisk CLI

show manager command command, Asterisk CLI

show manager commands command, Asterisk CLI

show manager connected command, Asterisk CLI

show modules command, Asterisk CLI

show parkedcalls command, Asterisk CLI

show queues command, Asterisk CLI

show translation command, Asterisk CLI

show uptime command, Asterisk CLI

show version command, Asterisk CLI

show voicemail users command, Asterisk CLI

show voicemail zones command, Asterisk CLI

side-tone 2nd

SigComp (Signaling Compression)

signal distortion

signal level noise

signaling channel

Signaling Compression (SigComp)

signaling problems, troubleshooting

signaling protocols

Signaling System 7 (SS7) 2nd 3rd 4th

silence suppression 2nd 3rd 4th

Simple Network Management Protocol (SNMP)

SIP (Session Initiation Protocol) 2nd 3rd 4th

        compared to H.323 protocol

        DNS resolution for

        endpoints, using without closet gateways

        features of

        in VoIP routers

        methods

        nodes

        non-telephony applications supported by

        packet encoding

        packet inspection

        passwords, MD5 authentication for

        proxies

        redirects

        registrar

        registrations not working through firewall

        response codes

        RTSP and

        SDP and

        URIs used by

        user agent elements

        using with Asterisk

SIP channels

        Asterisk and

        Asterisk CLI commands for

sip debug command, Asterisk CLI

SIP Express Router (SER) 2nd

SIP methods, list of

sip no debug command, Asterisk CLI

SIP peers 2nd

SIP phones

        compared to TDM phones

        example using

        private hunt group using

sip reload command, Asterisk CLI

SIP responses, list of

sip show channel command, Asterisk CLI

sip show channels command, Asterisk CLI 2nd

sip show inuse command, Asterisk CLI

sip show peers command, Asterisk CLI

sip show registry command, Asterisk CLI

sip show users command, Asterisk CLI

sip.conf file, Asterisk 2nd

        codec selection

        defining SIP peers 2nd

        enabling phone using

        MD5 settings 2nd

        per-peer codec selection

SIPdtmfMode command, Asterisk

skinny debug command, Asterisk CLI

skinny no debug command, Asterisk CLI

skinny show lines command, Asterisk CLI

skinny.conf file, Asterisk

Skype application 2nd

Skype softphone, silence suppression on

Skype USB handset

SLA (service-level agreement)

        for MOS

        for QoS

Slezak, Sven (LDAPGet package)

smart jack

SMS command, Asterisk

SMTP protocol

Sniffer (Network General)

SNMP (Simple Network Management Protocol)

SNOM 220 IP Phone, codecs supported

snooping

Snort software 2nd

soft fax solutions

soft hangup command, Asterisk CLI

Soft-Haus Solutions CallerID software

SoftHangup command, Asterisk 2nd

softPBX 2nd

        backup for, in case of crash

        H.323 implementations

        hardening

        heterogeneous signaling and

        not on call path

softphones

        for mobile office

        vendors for 2nd

software bugs

        as security risks

        status and reporting

SONET (synchronous optical network) 2nd 3rd

SoX application

SOXmix application

SOYO

spam, voice

SpanDSP package

speakerphones

special extensions, Asterisk

SpeechSoft package

Speex codec 2nd

split-use T1 circuit

sprinkler systems

SRST (Survivable Remote Site Telephony)

SRTP (Secure Real Time Transport Protocol) 2nd 3rd

SS7 (Signaling System 7) 2nd 3rd 4th

staged rollout of VoIP

standard tones

static IP address

Status command, Asterisk Manager API

STM-1 circuit

stop command, Asterisk

stop now command, Asterisk CLI

stop when convenient command, Asterisk CLI

StopMonitor command, Asterisk

StopMonitor command, Asterisk Manager API

StopPlaytones command, Asterisk

STREAM FILE command, AGI

StripLSD command, Asterisk

StripMSD command, Asterisk

STUN (Simple Traversal of UDP NAT) 2nd

subnet

SUBSCRIBE method, SIP 2nd

subtractive distortion

subtractive noise 2nd

success delta 2nd 3rd

surveillance systems

survivability

Survivable Remote Site Telephony (SRST)

switch-to-switch trunk

switched network

switches 2nd 3rd 4th

        speed of

        vendors for

switchovers, timing of

synchronous optical network (SONET) 2nd

syslog keyword, Asterisk

System command, Asterisk 2nd