ZyXEL GS-105I User Guide - Page 228
ChangeMe, SIP Service, Provider, G.711a, G.711u, G.726-24, G.726-32, G.729, G.722
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Chapter 21 VoIP Each field is described in the following table. Table 96 VoIP > SIP > SIP Account > Add new account/Edit LABEL DESCRIPTION SIP Account Selection SIP Account Selection This field displays ChangeMe if you are creating a new SIP account or the SIP account you are modifying. SIP Service Provider Association SIP Account Associated with Select the SIP service provider profile to use for the SIP account you are configuring in this screen. You should already have configured a SIP service provider profile in the SIP Service Provider screen. General Enable SIP Account SIP Account Number Authentication Username Password URL Type URL Type This field is read-only when you are modifying an existing SIP account. Select this if you want the Zyxel Device to use this account. Clear it if you do not want the Zyxel Device to use this account. Enter your SIP address. In the full SIP URI, this is the part before the @ symbol. You can use up to 127 printable ASCII characters. Enter the user name for registering this SIP account, exactly as it was given to you. You can use up to 95 printable ASCII characters. Enter the user name for registering this SIP account, exactly as it was given to you. You can use up to 95 printable ASCII Extended set characters. Select whether or not to include the SIP service domain name when the Zyxel Device sends the SIP address. SIP - include the SIP service domain name. Voice Features Primary Compression Type Secondary Compression Type Third Compression Type TEL - do not include the SIP service domain name. Select the type of voice coder/decoder (codec) that you want the Zyxel Device to use. G.711 provides high voice quality but requires more bandwidth (64 kbps). G.711 is the default codec used by phone companies and digital handsets. • G.711a is typically used in Europe. • G.711u is typically used in North America and Japan. G.726-24 operates at 24 kbps. G.726-32 operates at 32 kbps. By contrast, G.729 only requires 8 kbps. G.722 is a 7 KHz wideband voice codec that operates at 48, 56 and 64 kbps. By using a sample rate of 16 kHz, G.722 can provide higher fidelity and better audio quality than narrowband codecs like G.711, in which the voice signal is sampled at 8 KHz. The Zyxel Device must use the same codec as the peer. When two SIP devices start a SIP session, they must agree on a codec. Select the Zyxel Device's first choice for voice coder/decoder. Select the Zyxel Device's second choice for voice coder/decoder. Select None if you only want the Zyxel Device to accept the first choice. Select the Zyxel Device's third choice for voice coder/decoder. Select None if you only want the Zyxel Device to accept the first or second choice. PX7511-B0 User's Guide 228