0x0264 Use SIP Remote Host/Default Proxy Host

Use this TLV to specify the remote default proxy host. The value is a null-terminated ASCII string representing either an IP address (for example, 10.10.10.10) or domain name (for example, sip.excel.com). To de-configure the SIP default proxy host use this value: 0.0.0.0.

Used in:
VoIP Protocol Configure message
VoIP Protocol Query message

Byte | Description
0, 1 | Tag 0x0264
2, 3 | Length Variable
4-N | Value Null terminated ASCII string

Tag-Length-Value block. A standardized block that allows data to inserted in a standard way into API messages.
American Standard Code for Information Interchange
Internet Protocol. Part of the TCP/IP family of protocols used to route messages and tracks the addresses of nodes.
Session-Initiation Protocol. A signaling protocol used for establishing sessions in an IP network. A session could be a simple, two-way telephone call, or it could be a collaborative multi-media conference session.
Voice over Internet Protocol. The delivery of voice information in digital form in discrete packets rather than in the traditional circuit-committed protocols of the public-switched telephone network (PSTN).