0x01D4 Type of Service

Use this TLV to set the quality of service for outgoing packets (RTP/RTCP/T.38). This attribute can be modified in a run-time environment.

Note that the signaling protocol is responsible to adhere to the RFC Standards when imposing type of service restrictions.
Used in:
0x1E Generic PPL ICB in:
Resource Attribute Configure message
Resource Attribute Query message

Byte | Description
0, 1 | Tag: Type of Service (0x01D4)
2, 3 | Length: 0x0001
4 | Value: Data[0] = b7b6b5b4b3b2b1b0 b7b6b5: Precedence: 000 Routine 100 Priority 010 Immediate 110 Flash 001 Flash Override 101 CRITIC/ECP 011 Internetwork control 111 Network control 0x00 (Default) b4: Delay: 0 Normal delay (Default) 1 Low delay b3: Throughput: 0 Normal throughput (Default) 1 High throughput b2: Reliability: 0 Normal reliability (Default) 1 High reliability b1: Cost: 0 Normal cost (Default) 1 Low cost b0This bit must be zero

Tag-Length-Value block. A standardized block that allows data to inserted in a standard way into API messages.
Real-Time Transport Protocol. Supports transport of real-time data like interactive voice and video over packet-switched networks.
Real-Time Transport Control Protocol.
See Programmable Protocol Language.
See Information Control Block.
Quick depress and release of the phone plunger of a handset to signal the PBX or Centrex of instructions to follow (e.g., Call Transfer).