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Talkswitch CT.TS005.001101.UK manual What is SIP?

Models: CT.TS005.001101.UK

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What is SIP?

The Session Initiation Protocol (SIP) is a signalling protocol used for establishing sessions in an IP network. A session could be a simple two-way telephone call or it could be a collaborative multi-media conference session.

Over the last couple of years, the Voice over IP community has adopted SIP as its protocol of choice for signalling. SIP is an RFC standard (RFC 3261) from the Internet Engineering Task Force (IETF), the body responsible for administering and developing the mechanisms that comprise the Internet.

The IETF’s philosophy is simplicity: specify only what you need to specify. SIP just initiates, terminates and modifies sessions.

TalkSwitch phone systems use the Appello® SIP Stack for VoIP communications. The Appello® SIP Stack was developed by TalkSwitch — a division of Centrepoint Technologies Inc.

What is a VPN? Can a VPN help me to carry data securely over the Internet?

VPN stands for Virtual Private Network. It is a means of having the advantages of a private network on a shared public infrastructure like the Internet. A VPN provides security by using encryption/decryption. Using a process called ‘tunneling’, private data is encrypted and then encapsulated before being sent across the network. These packets of information are sent to their destination. Only those with the correct protocol information are able to enter a company’s network.

A VPN is very useful for providing employees with remote access to the company network without compromising security. Encryption can have a negative impact on the call quality, as the overhead on the network connection is increased. For example, IPSec adds approximately 10 per cent overhead to VPN traffic.

What’s the difference between a Public IP Address and a Private IP Address?

A Public IP Address is a globally unique number that identifies a device on the Internet. If you want someone on the Internet to connect to you, they must know your public address. Also known as your “real” or “external” address.

Private IP Addresses are typically assigned to devices on a LAN (Local Area Network) and are not routable outside the LAN. Private IP Addresses are

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Talkswitch CT.TS005.001101.UK manual What is SIP?

Contents

User Guide Copyright Information Temperature & Environment Power & Lightning SurgesPower Adaptor & Power Cords TalkSwitch Usage MaintenancePower Failure Emergency Service AccessTA B L E O F CO N T E N T S 1.1 B L E O F C O N T E N T SI I Call Detail Record CDR Logging Open the system package, which will contain InstallationLight State Description Front Panel LightsBack Panel TalkSwitch 24 Models TalkSwitch 48 ModelsPorts Purpose TalkSwitch 28 ModelsPlugging Into the Back Panel Connecting telephone linesAttach an Internal or External Modem Connecting extension telephones and other devicesConnecting devices to the Music and PA ports Connecting TalkSwitch to a PC using a Serial cable Connecting TalkSwitch to a LAN and/or PCConnecting TalkSwitch to a LAN for local configuration Connecting TalkSwitch to a PC using a USB cableConnecting 2 or more TalkSwitch units to a LAN Using 2 or More Talkswitch Units on a LANConnecting to TalkSwitch over IP Setting the Unit ID for the first time Unit ID Changing the Unit IDHow unit IDs affect system extension numbers Outgoing Line Hunt Groups Configuration SettingsKeep track of the lines and extensions Optimizing the system for networked useVoicemail TA L K S W I T C H CO N F I G U R a T I O N Connection Type Running the Talkswitch SoftwareButton Restore Firmware System ConfigurationConfiguration screen Tools Menu File MenuView Menu Help Menu Configuration NavigationStart Menu Programs TalkSwitch Documentation Disa System InformationAdministration Configure TalkSwitch IP settings IP ConfigurationLocation Settings Public WAN IP Address System IP Settings sectionSystem IP Settings section Public WAN IP Address see previous section VoIP ConfigurationTalkSwitch Profile tab User Name and Password Section View Registration Status button VoIP NumbersView Registrar Entries button Service Provider Profile tab Pstn analogue telephone Lines Phone numbers section Telephone company services sectionL K S W I T C H U S E R G U I D E U K & I R E L a N D VoIP Numbers TalkSwitch Profile sectionLine Hunt Groups Service Provider Profile sectionAutomatic Route Selection and Toll Restriction Planning Automatic Route Selection and Toll Restriction Configure Line Hunt Groups also, see sectionEntering Leading Digits and Assigning Actions L K S W I T C H U S E R G U I D E U K & I R E L a N D Click the Hunt Group Access button Set Local Extension Hunt Group AccessAdditional Notes System Information AdministrationFax Information Local Extensions Phone Type Direct Line Access buttonCaller ID Information section Remote Extensions Hunt Group Access buttonForwarding Information Different uses for Extension Ring Groups Extension Ring GroupsSet Ring Group section Identify types of calls by different ring patternsOn-hold/Ringback On-Hold SettingsTransfer Settings Local Extension Voicemail VoicemailLoad Greeting button Voicemail Notification Settings sectionMailbox Option section Configuration Notification Options button Remote Extension Voicemail Load Greeting button Voicemail Notification Settings tabGeneral Voicemail Mailbox Settings Global SettingsGlobal Message Waiting Indicator View Mailbox Data button Reset Mailboxes buttonCall Handling ModesAuto Attendant Record Auto Attendant messages At the Auto Attendant, perform the following actions Recording Auto Attendants from an out-of-office phoneL K S W I T C H C O N F I G U R a T I O N L K S W I T C H U S E R G U I D E U K & I R E L a N D Load Auto Attendant button Utilities for an auto attendant Record Instructions buttonAuto Attendant On an incoming call during mode 1 orErase Instructions button L K S W I T C H C O N F I G U R a T I O N Adjust Sequence.. button Local Extensions Call Cascade L K S W I T C H U S E R G U I D E U K & I R E L a N D L K S W I T C H C O N F I G U R a T I O N Remote Extensions Call Cascade L K S W I T C H C O N F I G U R a T I O N Extension Ring Groups Call Cascade Call Back/DISA Step Auto Call Back L K S W I T C H U S E R G U I D E U K & I R E L a N D Prompted Call Back L K S W I T C H U S E R G U I D E U K & I R E L a N D Disa Audio Controls OptionsVoIP Codec Selection Line ControlsExtension Controls Transfer Options Remote Transfer MiscellaneousTransferring from a Home phone Transfer and clearIf being used with another PBX Caller in queue reminderCall Back ring return Fax Over IP Internal clock settingIntercom Calls Auto Attendant Transfer Prompts TroubleshootingInternal Caller ID options Audio Output OptionsNon-detection of disconnect-clear Double Recall timeWay Calling wait time Ring PatternsDtmf Detection Troubleshooting AdvancedAuto Attendant Adjustments Auto Route SelectionFax Detection Line CPC/Disconnect ClearRingback Control VoIP Ports Receiving calls without the Auto Attendant Receiving calls using the Auto AttendantPlace ‘out-of-office’ calls from a Local Extension Office Making and Receiving CallsMaking calls from a Local Extension Receiving calls at a Local ExtensionPlace calls on hold Placing calls on Hold at a Local ExtensionTransferring calls Call Pick UpFrom a Local Extension to any outside telephone number Call Park Parking and retrieving callersParking a caller Call Queue/UCD/Call Waiting Queuing and retrieving callers Parking a caller using Auto ParkUsing Call Park with the Paging option Retrieving a parked callQueuing callers to an Extension Ring Group Case B Two outside callers and one Local Extension Using the TalkSwitch Call Waiting featureConference calling with TalkSwitch Making and receiving calls using VoIP Transferring calls on parallel-connected phones Using Phones connected in parallel to TalkSwitchModems and telephone line access Transferring calls OUT of the Office Receiving Calls Through Call ForwardingThree ways to forward calls Transferring calls from a Remote ExtensionForwarding calls with screening Screening options for forwarded callsReceiving calls Using the Talkswitch Voicemail SystemCalls over VoIP with SIP phones and Gateways Making callsActivating voicemail boxes Retrieving messages/Accessing a voice mailboxListen to messages press Record name for Dial by Name Directory press Pager and Cell Phone notificationChange greeting options press Change personal options pressMusic on Hold and Call Forwarding to Remote Extensions Mode Switching OptionsManual Mode Switching Music on HoldHow to use Disa Call Bridge Using Call BridgeAutomatic Mode Switching using the Time Scheduler Using Call Back Accepting the Call Back Activate Call BackStep #1 Check current version Upgrading the Talkswitch Software and FirmwareStep #3 Updating the firmware Step #2 Download new software and firmwareI N G T a L K S W I T C H Page Enabling Call Detail Record CDR Logging L L D E T a I L RE CO RD LO G G I N G C D RRetrieving Data Web Interface Store to File on TalkSwitchSystem Information IP Configuration page in the software Click on the link for Call Detail Record CDR Management Serial Interface Real Time to Serial Interface Click on Transfer Capture Text Analyzing the DataExample Example Page Broadband Connection Introduction to VoipOptimizing Your IP Network for Voip Router/NAT/Firewall High-speed connections on both ends of the call Local Area NetworkHow does VoIP work? Does a VoIP call sound like a regular phone call?Can a firewall prevent VoIP calls from passing through? If the power goes out, does the VoIP network stay up?Choose the right Codec for your location What happens to VoIP if the IP network fails?What is SIP? What is NAT and how does it affect VoIP? What is Dynamic DNS? What is a SIP Proxy and Registrar?How often will my Public IP address change? What is the drawback of using Dynamic DNS?What is a port number? L P a N D TRO U B L E S H O O T I N G Troubleshooting Problems that may occur during Configuration Page Music on Hold Answering and Fax Machines Other Possible Local Extension Problems L K S W I T C H U S E R G U I D E U K & I R E L a N D Problems that may occur with VoIP L K S W I T C H U S E R G U I D E U K & I R E L a N D Distinctive Ringing Caller DisplayThree Way Calling/Conference Multi-Line Service / Hunting FacilitiesCentrex Transfer Application Notes Telephone Company ServicesPage I CK CO M M a N D S L K S W I T C H U S E R G U I D E U K & I R E L a N D P E N D I X C L K S W I T C H U S E R G U I D E U K & I R E L a N D User Defined An Extension, Ring Group, Auto L K S W I T C H U S E R G U I D E U K & I R E L a N D RE G U L a T O R Y I N F O R M a T I O N Product Suffix Intended Markets DisposalTA L K S W I T CH E -YE a R WA R R a N T Y Warranty Service Extension Interface Pstn Analogue Telephone Line InterfaceSystem Mode Scheduling and Power Interruptions TalkSwitch settings and configurationsCalling Features L K S W I T C H U S E R G U I D E U K & I R E L a N D Copyright 2000-2003 Intel Corporation. All rights reserved Copyright 1998 by the Massachusetts Institute of TechnologyL K S W I T C H U S E R G U I D E U K & I R E L a N D P E N D I X F Page O S S a R Y CNG CTI Dtmf LED L K S W I T C H U S E R G U I D E U K & I R E L a N D TX/RX L K S W I T C H U S E R G U I D E U K & I R E L a N D