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XStream‐PKG‐T™TelephoneRFModem–ProductManualv5.x00[2006.02.24]

Table3‐03. TelephoneModuleATCommands–AmpersandCommands

(Low‐assertedsignalsaredistinguishedbyhorizontallineoverpinname.)

Command

Parameters

Ampersand (&) Commands

&Cn

n = 0

Always On

n = 1 Module Controls

(default)

&Dn

n = 0 Ignore

n = 1

drop puts module in command mode without disconnecting

n = 2

drop causes the module to hang up (default)

n = 3

drop causes module to perform a soft reset as if the Z command were received

&Fn

n = 0 Restore Factory Configuration 0

n = 1 Restore Factory Configuration 1

&Gn

n = 0 No Guard Tone (default)

n = 2 1800 Hz Guard Tone

&Kn

n = 0 Disables flow control

n = 3 Enables

/ hardware flow control (default)

n = 4 Enables XON/XOFF software flow control

n = 5 Enables transparent XON/XOFF software flow control

&Rn

n = 0

follows . - delay set by “S26” S-Parameter.

n = 1

always asserted.

&Sn

n = 0

Always On (default)

n = 1 Module Controls

&Tn

n = 0 Terminates test in progress

n = 1 Begin Analog Loopback Test

&V Diagnostic command - Reports current configuration, stored user profiles and first 4 stored telephone numbers

&V1 Diagnostic command - Shows statistics for most recent connection

&Wn

n = 0 Store configuration as profile 0

n = 1 Store configuration as profile 1

&Yn

n = 0 Hard reset restores profile 0

n = 1 Hard reset restores profile 1

&Zn Stores telephone number dial string (to 31 digits) into n (n = 0 - 3)

S-Parameters

Reading and Setting S-Parameters

Commands that begin with the letter “S” are called S-Parameters. The number following the “S”

indicates the parameter number. The Telephone Module can select an active S-Parameter and

(where applicable) perform read/write operations. Commands can be performed on an S-

Parameter as follows:

ATSn – Makes S-Parameter n active

ATSn=v – Sets S-Parameter n to value v

ATSn? – Reads current value of S-Parameter n

Once a register is made active (the last register accessed), the register name is optional and can

be omitted from subsequent read/write commands that reference the same register. This is show

in the table below.

Table3‐04. Samplereadandwritecommandsusingactiveregister

Command System Response

ATS7 Make “S7” Parameter Active

AT=51 or ATS7=51 Set “S7” to 51 (decimal)

AT? Read Value of “S7”

If the number n (or the value v on a write) is out of range or invalid, the module will return the

“ERROR” message. All S-Parameter values and responses are in decimal format. All S-Parameters

can be read using “&V” command [Table 3-03].

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