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HT813 Administration Guide
Version 1.0.1.2
Backup Outbound
Proxy
Configures the backup outbound proxy to be used when the “Outbound Proxy”
registration fails. By default, this field is left empty.
Prefer Primary
Outbound Proxy
If the user
configures this option to “
Yes
”, when registration expires, the device will re-
register via primary outbound proxy.
By default, this option is disabled.
Allow DHCP Option
120 (override SIP
Server)
Configures the HT813 to collect SIP server address from DHCP option 120.
Default is
No
.
SIP Transport
Selects transport protocol for SIP packets; UDP or TCP or TLS. Please make sure your
SIP Server or network environment supports SIP over the selected transport method.
Default is
UDP
.
SIP URI Scheme
When Using TLS
Specifies if “sip” or “sips” will be used when TLS/TCP is selected for SIP Transport. The
default setting is “sips”.
Use Actual
Ephemeral Port in
Contact with
TCP/TLS
Controls the port information in the Via header and Contact header. If set to “No”, these
port numbers will use the permanent listening port on the phone. Otherwise, it will use
the ephemeral port for the connection. The default setting is “No”.
NAT Traversal
Indicates type of NAT for each account. This parameter configures whether the NAT
traversal mechanism is activated. Users could select the mechanism from No, Keep-
alive, STUN, UPnP. Default setting is
No
.
SIP User ID
Defines user account information provided by VoIP service provider (ITSP). Usually in
the form of digit similar to phone number or actually a phone number.
Authenticate ID
Determines account authenticate ID provided by VoIP service provider (ITSP). Can be
identical to or diff
erent from “SIP user ID”.
Authenticate
Password
Specifies account password provided by VoIP service provider (ITSP) to register to SIP
servers.
Name
Chooses a name to be associated to user.
DNS Mode
Selects DNS mode to use for the client to look up server. Default is
A Record
.
A Record:
resolves IP Address of target according to domain name.
SRV:
DNS SRV resource records indicate how to find services for various
protocols.
NAPTR/SRV
: Naming Authority Pointer according to RFC 2915.
