- Entry:
- ARP2 or ARS2
- VIT option:
- HPR
- Event:
- Any session data reply is sent over an RTP connection using Responsive Mode ARB
- VIT processing module:
- ISTITCHR
This trace record is a continuation of the ARP or ARS
entry. 
- Byte (hex)
- Contents
- 00–03
- Record ID:
- C"ARP2" for real reply
- C"ARS2" for simulated reply
- 04–05
- Current F-curve value (ARB2_FCURVE_NOW)
- 06–07
- Current alpha value (ARB2_ALPHA_NOW)
- 08–0B
- Current tracking speed value
- 0C–0F
- Maximum send rate in kbps (ARB_MAX_SEND_RATE)
- 10–13
- Allowed send rate in kbps (ARB_ALLOW_SEND_RATE)
- 14–17
- Target rate in kbps (ARB2_TARGET_RATE)
- 18–1B
- Smooth actual rate in kbps (ARB2_SMOOTH_ACTUAL_RATE)
- 1C–1F
- Smooth round-trip time in milliseconds (RPN_SRTT)