Multi-Tech Systems MT5600SMI-PL34, MT5600SMI-XL34 Initiate Modem-on-Hold, Modem-on-Hold Timer

			Chapter 5 – AT Commands, S-Registers, and Result Codes
Command:	+PMHR	Initiate Modem-on-Hold
Description:		Requests the modem to initiate or to confirm a modem-on-hold procedure.
		The modem will return ERROR if modem-on-hold is not enabled or if the
		modem is in an idle condition. The modem will return the string response
		+PMHR: <value> where <value> is a decimal value corresponding to the
		status of the modem's hold exchange procedure as defined below. This
		response may be delayed depending upon the context under which the
		+PMHR command is made, i.e., if the +PMHR is in response to an
		incoming modem-on-hold or if it is initiating a request.
		Note: If modem-on-hold is enabled but the remote server does not support
		V.92 then the modem will always report 0 to show that the hold request is
		denied.
Response:		+PMHR:<value>
		The value corresponds to the maximum hold time the server or hold-
		granting modem will allow.
		+PMHR0	V.92 MOH request denied or not available.
		+PMHR1	MOH with 10-second timeout Granted.
		+PMHR2	MOH with 20-second timeout Granted.
		+PMHR3	MOH with 30-second timeout Granted.
		+PMHR4	MOH with 40-second timeout Granted.
		+PMHR5	MOH with 1-minute timeout Granted.
		+PMHR6	MOH with 2-minute timeout Granted.
		+PMHR7	MOH with 3-minute timeout Granted.
		+PMHR8	MOH with 4-minute timeout Granted
		+PMHR9	MOH with 6-minute timeout Granted.
		+PMHR10	MOH with 8-minute timeout Granted.
		+PMHR11	MOH with 12-minute timeout Granted.
		+PMHR12	MOH with 16-minute timeout Granted.
		+PMHR13	MOH with indefinite timeout Granted.
Result Codes:		OK 0-13 in V.92 Mode (+MS=V92)
		ERROR
Command:	+PMHT	Modem-on-Hold Timer
Description:		Controls whether or not the modem will grant or deny a modem-on-hold
		(MOH) request as well as setting the MOH Timeout value.
Defined Values:		+PMHT0	Deny V.92 modem-on-hold Request (Default.)
		+PMHT1	Grant MOH with 10-second timeout
		+PMHT2	Grant MOH with 20-second timeout
		+PMHT3	Grant MOH with 30-second timeout
		+PMHT4	Grant MOH with 40-second timeout
		+PMHT5	Grant MOH with 1 minute timeout
		+PMHT6	Grant MOH with 2 minute timeout
		+PMHT7	Grant MOH with 3 minute timeout
		+PMHT8	Grant MOH with 4 minute timeout
		+PMHT9	Grant MOH with 6 minute timeout
		+PMHT10	Grant MOH with 8 minute timeout
		+PMHT11	Grant MOH with 12 minute timeout
		+PMHT12	Grant MOH with 16 minute timeout
		+PMHT13	Grant MOH with indefinite timeout
Result Codes:		OK 0-13 in V.92 Mode (+MS=V92)
		ERROR
Report Commands:		+PMHT?	Reports Current or Selected Values.
			Response: +PMHT: <value>
			Example: +PMHT: 0 For the default setting.
		+PMHT=?	Reports Supported Range of Parameter Values.
			Response: +PMHT: (<value> range)
			Example: +PMHT: (0,1,2,3,4,5,6,7,8,9,10,11,12,13)

Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 72