DTE sends the calling modem a UA packet to transmit: <0x30>(0x73><EM><0xB1>

AN93

V.29 FastPOS Detailed Wave Files

The following is a wave file that shows a V.29 FastPOS SDLC transaction. It was captured with the program listed above with a keep-alive loop. See "Appendix B—Line Audio Recording" on page 273 for details on how to capture wave files.

RTS (not RTS) signal

V.29 Calling Tone

Answer Tone

(2225 Hz)

Calling modem is receiving and sends to the DTE: “Connect Packet” : <EM><0xBE><0x24><0x24><EM><B1> Then the SNRM Packet: <0x30><0x93><EM><0xB1>

Repeat

DTE sends the calling modem an RR packet to transmit: <30><EM><0xA0><EM><B1>

Calling modem is receiving. Sends a Tx abort to DTE: <EM><0xB2>

Then the received RR packet: <30><EM><0xA0><EM><B1>

Rev. 1.3

271

Page 271
Image 271
Silicon Laboratories SI2494/39, SI2493/57/34/15/04 manual FastPOS Detailed Wave Files, RTS not RTS signal