Phone; Phone Device - ZyXEL Communications AX Series User Manual

Table 133 VoIP > SIP > SIP Service Provider > Add New Provider or Edit (continued)
LABEL
Dialing Interval Selection
SIP Server Location DNS
Method
OK
Cancel

25.5 Phone

Use these screen to configure SIP numbers and regions for IP phones that are connected to the Zyxel
Device.

25.5.1 Phone Device

Use this screen to view detailed information on phones used for Internet phone calls (SIP). You can
define which phones will ring when a specific SIP address receives an incoming call, and which SIP
address will be used when an outgoing call is made with a specific phone.
To access this screen, click VoIP > Phone > Phone Device.
Figure 221 VoIP > Phone > Phone Device
Chapter 25 Voice
DESCRIPTION
Enter the number of seconds the Zyxel Device should wait after you stop dialing
numbers before it makes the phone call. The value depends on how quickly you dial
phone numbers.
Select the method that the Zyxel Device used to query the ISP's DNS server for SIP
server address. The Zyxel Device will use the query result to locate the SIP server for
phone service registration.
Select BASIC to have the Zyxel Device query the DNS server for a DNS A record that
contains the IP address of the SIP server.
Select SRV to have the Zyxel Device query the DNS server for a DNS Service (SRV)
record. The SRV record is a list of all available SIP servers information that the DNS
server maintains. The Zyxel Device will then use the SRV record to perform A query to
get the SIP server IP. This is useful if your primary SIP server experiences difficulties,
making it hard for your IP phone users to make SIP calls.
Select NAPTR to have the Zyxel Device query the DNS server for DNS Name Authority
Pointer (NAPTR) records in order to find the available services (transport protocols)
supported by the SIP server. The Zyxel Device will then perform an SRV or A query to
get the SIP server information.
Click this to save your changes.
Click this to exit this screen without saving.
AX/DX/EX/PX Series User's Guide
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