| User ID is Phone |
| If the phone has an assigned PSTN telephone number, this field should be set to | |
| Number |
| “Yes”. Otherwise, set it to “No”. If “Yes” is set, a “user=phone” parameter will be | |
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| attached to the “From” header in SIP request | |
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| SIP Registration |
| This parameter controls sending REGISTER messages to the proxy server. The | |
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| default setting is “Yes”. | |
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| Default is No. If set to “Yes”, the SIP user’s registration information will be |
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| cleared on reboot. | |
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Register Expiration
This parameter allows user to specify the time frequency (in minutes) that BT200 refreshes its registration with the specified registrar. The default interval is 60 minutes. The maximum interval is 65,535 minutes (about 45 days).
| Local SIP Port |
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| This parameter defines the local SIP port used to listen and transmit. The default | |
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| value for Account 1 is 5060. It is 5062, 5064, 5066 for Account 2, Account 3 and |
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| Account 4 respectively. |
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| SIP Registration Failure |
| Retry registration if the process failed. Default is 20 seconds. |
| Retry Wait Time |
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| SIP T1 Timeout |
| RFC 3261 SIP T1 timer. Default is 1 second. |
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| SIP T2 Interval |
| RFC 3261 SIP T2 timer. Default is 0.5 seconds. |
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| SIP Transport |
| Choose SIP Transport between UDP and TCP. Default is UDP. |
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| Use RFC3581 |
| This option allows a SIP client to request that the server send the response back |
| Symmetric Routing |
| to the source IP address and port from which the request originated. |
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| NAT Traversal (STUN) |
| This parameter activates the NAT traversal mechanism. If activated (by choosing |
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| “Yes”) and a STUN server is also specified, the phone performs according to the |
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| STUN client specification. Using this mode, the embedded STUN client detects if |
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| and what type of NAT/Firewall configuration is used. If the detected NAT is a Full |
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| Cone, Restricted Cone, or a |
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| public IP address and port in all of its SIP and SDP messages. If the NAT |
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| Traversal field is set to “Yes” with no specified STUN server, the BT200 will |
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| periodically (every 20 seconds or so) send a blank UDP packet (with no payload |
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| data) to the SIP server to keep the “hole” on the NAT open. |
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| Subscribe for MWI |
| Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting Indication |
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| will be sent periodically. |
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| SIP Extension to notify SIP server that the unit is behind the NAT/Firewall. |
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| Voice Mail UserID |
| When configured, user can access messages by pressing “MSG” button. This ID |
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| is usually the VM portal access number. |
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| Send DTMF |
| This parameter specifies the mechanism to transmit DTMF digit. There are 3 |
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| supported modes: in audio which means DTMF is combined in audio signal (not |
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| very reliable with |
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| Early Dial |
| Default is No. Use only if proxy supports 484 response. |
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| Dial Plan Prefix |
| Sets the prefix added to each dialed number. |
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Grandstream Networks, Inc. | BT200 User Manual | Page 28 of 33 |
| Firmware 1.1.5.15 | Last Updated: 01/2008 |
