LABEL
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DESCRIPTION
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SIP Account
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This field displays the SIP account you see in this screen.
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SIP Server Settings
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URL Type
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Select whether or not to include the SIP service domain name when the ZyXEL Device sends the SIP number.
SIP - include the SIP service domain name.
TEL - do not include the SIP service domain name.
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Expiration Duration
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Enter the number of seconds your SIP account is registered with the SIP register server before it is deleted. The ZyXEL Device automatically tries to re-register your SIP account when one-half of this time has passed. (The SIP register server might have a different expiration.)
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Register Re-send timer
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Enter the number of seconds the ZyXEL Device waits before it tries again to register the SIP account, if the first try failed or if there is no response.
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Session Expires
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Enter the number of seconds the ZyXEL Device lets a SIP session remain idle (without traffic) before it automatically disconnects the session.
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Min-SE
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Enter the minimum number of seconds the ZyXEL Device lets a SIP session remain idle (without traffic) before it automatically disconnects the session. When two SIP devices start a SIP session, they must agree on an expiration time for idle sessions. This field is the shortest expiration time that the ZyXEL Device accepts.
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RTP Port Range
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Start Port
End Port
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Enter the listening port number(s) for RTP traffic, if your VoIP service provider gave you this information. Otherwise, keep the default values.
To enter one port number, enter the port number in the Start Port and End Port fields.
To enter a range of ports,
- enter the port number at the beginning of the range in the Start Port field.
- enter the port number at the end of the range in the End Port field.
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Voice Compression
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Select the type of voice coder/decoder (codec) that you want the ZyXEL Device to use. G.711 provides higher voice quality but requires more bandwidth (64 kbps).
- G.711A is typically used in Europe.
- G.711u is typically used in North America and Japan.
In contrast, G.729 only requires 8 kbps.
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.
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Primary Compression Type
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Select the ZyXEL Device's first choice for voice coder/decoder.
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Secondary Compression Type
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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.
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Third Compression Type
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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.
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DTMF Mode
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Control how the ZyXEL Device handles the tones that your telephone makes when you push its buttons. You should use the same mode your VoIP service provider uses.
RFC 2833 - send the DTMF tones in RTP packets.
PCM - send the DTMF tones in the voice data stream. This method 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.
SIP INFO - send the DTMF tones in SIP messages.
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Outbound Proxy
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Active
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Select this if your VoIP service provider has a SIP outbound server to handle voice calls. This allows the ZyXEL Device to work with any type of NAT router and eliminates the need for STUN or a SIP ALG. Turn off any SIP ALG on a NAT router in front of the ZyXEL Device to keep it from retranslating the IP address (since this is already handled by the outbound proxy server).
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Server Address
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Enter the IP address or domain name of the SIP outbound proxy server.
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Server Port
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Enter the SIP outbound proxy server's listening port, if your VoIP service provider gave you one. Otherwise, keep the default value.
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MWI (Message Waiting Indication)
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Enable
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Select this if you want to hear a waiting (beeping) dial tone on your phone when you have at least one voice message. Your VoIP service provider must support this feature.
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Expiration Time
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Keep the default value, unless your VoIP service provider tells you to change it. Enter the number of seconds the SIP server should provide the message waiting service each time the ZyXEL Device subscribes to the service. Before this time passes, the ZyXEL Device automatically subscribes again.
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Fax Option
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This field controls how the ZyXEL Device handles fax messages.
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G.711 Fax Passthrough
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Select this if the ZyXEL Device should use G.711 to send fax messages. The peer devices must also use G.711.
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T.38 Fax Relay
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Select this if the ZyXEL Device should send fax messages as UDP or TCP/IP packets through IP networks. This provides better quality, but it may have inter-operability problems. The peer devices must also use T.38.
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Call Forward
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Call Forward Table
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Select which call forwarding table you want the ZyXEL Device to use for incoming calls. You set up these tables in VoIP > Phone Book > Incoming Call Policy.
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Caller Ringing
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Enable
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Select the check box if you want to specify what tone people hear when they call you. The ZyXEL Device provides a default tone, but you can add additional tones using IVR.
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Caller Ringing Tone
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Select the tone you want people to hear when they call you. You should setup these tones using IVR first.
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On Hold
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Enable
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Select the check box if you want to specify what tone people hear when you put them on hold. The ZyXEL Device provides a default tone, but you can add additional tones using IVR.
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On Hold Tone
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Select the tone you want people to hear when you put them on hold. You should setup these tones using IVR first.
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Back
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Click this to return to the SIP Settings screen without saving your changes.
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Apply
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Click this to save your changes and to apply them to the ZyXEL Device.
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Cancel
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Click this to set every field in this screen to its last-saved value.
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