ZyXEL p-2302hw-p1 Manual Do Utilizador

P-2302HW/HWL-P1 Series User’s Guide

152

Chapter 9 SIP

Use this screen to maintain ToS and VLAN settings for the ZyXEL Device. To access this 
screen, click VoIP > SIP > QoS.

Keep Alive Interval Enter how often (in seconds) the ZyXEL Device should send SIP notify messages 

to the SIP server.

MWI (Message 
Waiting Indication)

Enable

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.

Expiration Time

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.

Fax Option

This field controls how the ZyXEL Device handles fax messages.

G.711 Fax 
Passthrough

Select this if the ZyXEL Device should use G.711 to send fax messages. The peer 
devices must also use G.711.

T.38 Fax Relay

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.

Call Forward

Call Forward Table 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.

Caller Ringing

Enable

Check this box if you want people to hear a recording when they call you. 

On Hold

Enable

Check this box if you want people to hear a recording when you put them on hold. 

<Back

Click this to return to the SIP Settings screen without saving your changes.

Apply

Click this to save your changes and to apply them to the ZyXEL Device.

Cancel

Click this to set every field in this screen to its last-saved value.

Table 61   VoIP > SIP > SIP Settings > Advanced