Multi-Tech Systems MT5600DSVD manual Register Unit Range Default Description S86

MultiModemDSVD User Guide		4 AT Commands, S-Registers, and Result Codes
Register	Unit	Range	Default	Description
S86	decimal	0, 3–23	n/a	When the modem issues a NO CARRIER
				result code, a value is written to this register
				to help determine the reason for the failed
				connection. S86 records the first event that
				contributes to a NO CARRIER message. Use
				the S86? command to read the value.

0 Normal disconnect; no error occurred.

3 Call Waiting caused disconnect.

4 Physical loss of carrier.

5 No error correction at the other end.

6 No response to feature negotiation.

7 This modem is async-only, the other sync-only.

8 No framing technique in common.

9 No protocol in common.

10 Bad response to feature negotiation.

11 No sync information from remote modem.

12 Normal disconnect initiated by remote modem.

13 Remote modem does not respond after

10 retransmissions of the same message.

14 Protocol violation.

15 DTR lost.

15 Three retrains or excessive retransmissions when no DTR.

16 Received GSTN cleardown.

17 Inactivity timeout.

18 Speed not supported.

19 Long space disconnect.

20 Key abort disconnect.

21 Clears previous disconnect reason.

22 No connection established.

23 Disconnect after three retrains.

S95	decimal 0–15,	0	The bits in this register can be set to over-
	32–47		ride some of the W command options. A bit
			set to a 1 in this register enables the corre-
			sponding result code regardless of the W
			setting.
			Bit 0	CONNECT result code indicates
				DCE speed instead of DTE speed.
			Bit 1 Append/ARQ to CONNECT XXXX
				result code in error-correction mode.
			Bit 2	Enable CARRIER XXXX result code.
			Bit 3 Enable PROTOCOL XXXX result code.
			Bit 4	Reserved.
			Bit 5	Enable COMPRESSION result code .
			Bit 6	Reserved.
			Bit 7	Reserved.

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