S103 – usr2x i/o, S104 – direction control for usr2x, 103 s105 – delay after any call attempt – Maxim Integrated 73M2901CE AT Command User Manual
Page 48: 104 s106 – delay between 1st and 2nd attempt, 105 s107 – delay between nth and n+1th attempt, 106 s108 – maximum successive failed attempts, 107 s109 – delay between series (re-enable delay), 108 s110 – line-in-use configuration register, S105 – delay after any call attempt, S106 – delay between 1

73M2901CE AT Command User Guide
UG_2901CE_027
48
Rev.
2.0
4.4.101
S103 – USR2x I/o
(Default = 254)
USR2x I/O Port status and control. When read, outputs the current status of USR1 port. When defined as
an output, a user port pin will assume the state written to it. Only USR20 is accessible.
4.4.102
S104 – Direction control for USR2x
(Default = 1)
USR2x Port Direction. If a bit is set to 0, the corresponding port pin is an output. If it is a one, the
corresponding port pin is an input. USR20=1.
4.4.103
S105 – Delay after any Call attempt
(Default = 5)
Sets the minimum delay between any call attempts of any phone number. Range is 1 – 254 (second).
Used for blacklisting.
4.4.104
S106 – Delay between 1
st
and 2
nd
attempt
(Default = 5)
Sets the minimum delay between 1
st
and 2
nd
call attempt of the same phone number. Range is 1 – 254
(second). Used for blacklisting.
4.4.105
S107 – Delay between n
th
and n+1
th
attempt
(Default = 60)
Sets the minimum delay between n
th
and n+1
th
call attempt, after 2
nd
try, of the same phone number. 1 –
254 (second). Used for blacklisting.
4.4.106
S108 – Maximum successive Failed attempts
(Default = 15)
Sets the number of maximum failed attempts to the same phone number before it is blacklisted.
4.4.107
S109 – Delay between Series (Re-enable delay)
(Default = 0)
Sets the value of minimum delay, since the 1
st
attempt, before re-enabling calls to a specific number. A
special value of 0 means that numbers are never re-enabled once blacklisted. Range is 0 – 254
(minutes).
4.4.108
S110 – Line-In-Use Configuration Register
(Default = 70h)
Bit 0 Enables Off-Hook Voltage sensing Parallel pick-up detection (PPU-V).
Bit 1 Enables On-Hook Line-In-Use Voltage sensing detection (LIU-V).
Bit 2 Enables On-Hook Line-In-Use Energy sensing detection (LIU-E).
Bit 3 Enables Call-Waiting Caller-ID option. This bit applies only to Off-Hook/Online/Type II Caller-ID.