different network environments.
If a symmetric NAT is detected, STUN will not work and ONLY an Outbound Proxy
can provide a solution.
Secondary Outbound Proxy
IP address or Domain name of the Secondary Outbound Proxy which will be used when
the primary proxy cannot be connected.
SIP User ID User account information, provided by your VoIP service provider.
SIP Authentication ID
SIP service subscriber’s Authenticate ID used for authentication. It can be identical to or
different from the SIP User ID.
SIP Authentication Password
The account password required for the phone to authenticate with the SIP server before
the account can be registered.
After it is saved, this will appear as hidden for security purpose.
Name
The SIP server subscriber’s name (optional) that will be used for Caller ID display (e.g.,
John Doe).
Tel URI
If the phone has an assigned PSTN telephone number, this field should be set to
"user=phone". A "user=phone" parameter will be attached to the Request-URI and "To"
header in the SIP request to indicate the E.164 number. If set to "Enable", "tel:" will be
used instead of "sip:" in the SIP request.
Voice Mail Access Number
Allows users to access voice messages by pressing the MESSAGE button on the phone.
This value is usually the VM portal access number.
Monitored Voicemail Access Number
Allows users to access the voice messages of monitored extension. This value is used
together with the voicemail programmable keys.
BLF Server Configures the BLF server (optional) used for SUBSCRIBE requests.
Picture Configures picture for the account. It will be sent to the caller/callee for the call.
Account Display
When set to “Username”, the LCD will display the Username if it is not empty and
when set to “User ID”, the LCD will display the User ID if it is not empty.
Network Settings
DNS Mode
This parameter controls how the Search Appliance looks up IP addresses for hostnames.
There are four modes: A Record, SRV, NATPTR/SRV, Use Configured IP.
The default setting is “A Record”.
If the user wishes to locate the server by DNS SRV, the user may select “SRV” or
“NATPTR/SRV”.
If “Use Configured IP” is selected, please fill in the three fields below:
● Primary IP
● Backup IP 1
● Backup IP 2
If SIP server is configured as domain name, phone will not send DNS query, but use
“Primary IP” or “Backup IP x” to send SIP message if at least one of them are not
empty.
Phone will try to use “Primary IP” first. After 3 tries without any response, it will
switch to “Backup IP x”, and then it will switch back to “Primary IP” after 3 re-tries.
If SIP server is already an IP address, phone will use it directly even “User Configured
IP” is selected.
DNS SRV Failover Mode Configures the preferred IP mode for DNS SRV. If set to “default”, the first IP from the
query result will be applied. If set to “Saved one until DNS TTL”, previous IP will be
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