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ADSL2+ Wireless N300 Modem Router with VoIP User Guide YML9WMAXXN
26 www.netcomm.com.au
Voice
This chapter rst describes the various options for conguration of the SIP voice service. It then provides detailed instructions for making
telephone calls using VoIP (Voice over IP) or PSTN (Public Switched Telephone Network) services
5.1 SIP
Session Initiation Protocol (SIP) is a peer-to-peer protocol used for Internet conferencing, telephony, events notication, presence and
instant messaging.
SIP is designed to address the functions of signalling and session management within a packet telephony network. Signalling allows call
information to be carried across network boundaries. Session management provides the ability to control the attributes of an end-to-end
call.
The SIP standard denes the following agents/servers:
1. User Agents (UA) - SIP phone clients (hardware or software)
2. Proxy Server – relays data between UA and external servers
3. Registrar Server - a server that accepts register requests from UA
4. Redirect Server – provides an address lookup service to UA
NOTE: The SIP standard is set by the Internet Engineering Task Force (IETF).
The following subsections present Basic, Advanced and Debug SIP screens. Each screen provides various options for customizing the SIP
conguration.
5.1.1 SIP BASIC
This screen contains basic SIP conguration settings.
Once settings are congured click Save/Apply to begin using the service.
NOTE: Consult the tables that follow for detailed eld descriptions
Interface name Choose the WAN interface
Locale Selection Sets tone, ring type and physical characteristics for specic countries
Preferred codecs Choose G.711U, G.711A, G.726 or G.729
Preferred ptime The time period used to digitally sample the analog voice signal. The default is 20 ms.
Use SIP proxy Enable the SIP proxy by selecting the checkbox and setting proxy parameters.
SIP Proxy Input IP address or domain name of the SIP proxy server, used for VOIP service.
SIP Proxy port This value is set by your VoIP provider and is normally port 5060.
Registration Expire Timeout The time period the user would like the registration to be valid for the Registrar/ Proxy Server. The
default is 300 seconds.
SIP domain name Provided by your VoIP provider.