ZyXEL ISG50-PSTN User Guide - Page 491
Table 169, Label, Description
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Chapter 30 Outbound Trunk Group Each field is described in the following table. Table 169 Trusted Peer Trunk Add/Edit LABEL Trunk Name Description SIP Proxy Server Address SIP Proxy Server Port Service Domain Outbound Proxy Outbound Proxy Port DESCRIPTION Type the name of this trunk. This field can be 1-30 alphanumeric characters (A-Z, a-z, 09) and underscores (_). The first character must be a letter. Type the description for this interface. This field can be 0-63 alphanumeric characters (AZ, a-z, 0-9), underscores (_), hyphens (-) and spaces. 0 means this field can be left blank. Enter the IP address or domain name of the SIP server provided by your VoIP service provider. You can use up to 64 printable ASCII characters. It does not matter whether the SIP server is a proxy, redirect or register server. Enter the SIP server's listening port number, if your VoIP service provider gave you one. Otherwise, keep the default value. Select Define Service Domain and enter the SIP service domain name. In the full SIP URI, this is the part after the @ symbol. You can use up to 64 printable ASCII Extended set characters. If you choose not to use a service domain, select Disable. Select Define Outbound Proxy and enter the IP address or domain name of the outbound proxy server provided by your VoIP service provider. You can use up to 64 printable ASCII characters. It does not matter whether the SIP server is a proxy, redirect or register server. If you choose not to use an outbound proxy server, select Disable. Enter the outbound proxy's listening port number, if your VoIP service provider gave you one. Otherwise, leave it as the default '5060'. DTMF Mode If the outbound proxy is disabled, then this port will be ignored. Control how the ISG50 handles the tones that the IP phones on your network make when they push their buttons. One use of the tones is to distinguish between numbers when trying to dial a PSTN phone number. You should use the same mode as your VoIP service provider. The choices are: Enable Privacy • info - Send the DTMF tones in SIP messages. • rfc2833 - Follow the RFC 2833 standard and send the DTMF tones in RTP packets. • inband - Send the DTMF tones in the voice data stream. This works best when you are using a codec that does not use compression (like G.711). Codecs that use compression (like G.729) can distort the tones. Select this to replace the caller's name and number with "Anonymous". For example, "Anonymous". Proxy Require Channel-limit Session Timer Enable Session Timer Minimum SE Clear this to display caller ID as displayed in this screen's CallerID Viewer field. Enter this (0~127 alphanumeric characters) to inform the SIP server that this device is behind a firewall or NAT device. Fill this field in only if you were given information by your SIP service provider. Specify the maximum number of SIP calls (1~128) allowed to be made through this trunk connection at one time. Select this activate the ISG50's session timer. If you encounter connectivity issues with your network or Internet, then it is suggested that you use the session timer. Enter the minimum session expiry time in seconds. The allowable range is 90~1800 seconds. Session Expires When an incoming call requests a session expiry time that is lower than this, the ISG50 uses this value instead. Enter the session expiry time in seconds for all phone connections on this trunk The allowable range is 90~86400 seconds. This value cannot be lower than the Minimum SE. This allows the ISG50 to automatically disconnect any phone calls on this trunk after a certain period of inactivity. ISG50 User's Guide 491