Grandstream Networks HT502

Grandstream Networks, Inc. HT-502 User Manual Page 21 of 31

Firmware 1.0.0.29 Last Updated: 01/2007

TABLE 10: HT–502 INDIVIDUAL ACCOUNT SETTINGS DEFINITIONS

Profile Active When set to Yes the FXS port is activated.

SIP Server SIP Server’s IP address or Domain name provided by VoIP service

provider.

Outbound Proxy IP address or Domain name of Outbound Proxy, or Media Gateway, or

Session Border Controller. Used by HT–502 for firewall or NAT

penetration in different network environments. If symmetric NAT is

detected, STUN will not work and ONLY outbound proxy can correct the

problem.

SIP transport User can select UDP or TCP or TLS.

NAT Traversal (STUN) This parameter defines whether the HT–502 NAT traversal mechanism is

activated or not. If activated (by choosing “Yes”) and a STUN server is also

specified, then the HT–502 performs according to the STUN client

specification. Under this mode, the embedded STUN client will detect if and

what type of firewall/NAT is being used. If the detected NAT is a Full Cone,

Restricted Cone, or a Port-Restricted Cone, the HT–502 will use its

mapped public IP address and port in all of its SIP and SDP messages.

If the NAT Traversal field is set to “Yes” with no specified STUN server, the

HT–502 will periodically (every 20 seconds or so) send a blank UDP

packet (with no payload data) to the SIP server to keep the “hole” on the

NAT open.

SIP User ID 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 SIP service subscriber’s Authenticate ID used for authentication. Can be

identical to or different from SIP User ID.

Authenticate Password SIP service subscriber’s account password.

Name SIP service subscriber’s name for Caller ID display.

Use DNS SRV Default is No. If set to “Yes” the client will use DNS SRV to look up server.

User ID is Phone

Number

If the HT–502 has an assigned PSTN telephone number, this field should

be set to “Yes”. Otherwise, set it to “No”.

If “Yes” is set, a “user=phone” parameter will be attached to the “From”

header in SIP request.

SIP Registration Controls whether the HT–502 needs to send REGISTER messages to the

proxy server. The default setting is Yes.

Unregister on Reboot Default is No. If set to Yes, the SIP user’s registration information will be

cleared on reboot.

Outgoing Call w/o

Registration

Default is No. If set to “Yes,” user can place outgoing calls even when not

registered (if allowed by ITSP) but is unable to receive incoming calls.

the HT–502 refreshes its registration with the specified registrar. The

default interval is 60 minutes (or 1 hour). The maximum interval is 65535

minutes (about 45 days).

Local SIP port Defines the local SIP port the HT–502 will listen and transmit. The default

value for FXS port 1 is 5060. The default value for FXS port 2 is 5062.

Local RTP port Defines the local RTP-RTCP port pair the HT–502 will listen and transmit.