User manual

Section 8

S REGISTERS

8-9

S50 Redial Attempts

Default : 5 Decimal

Range : 0 to 256 Seconds (Stored in NVRAM)

If a call is made in AT*A mode and the message is not successfully sent, the unit will

attempt to redial the number of times stored in this register before giving up. This takes

into account alternate number dialling. In this scenario, the modem attempts to connect

using the number stored in location 0 and then the number stored in location 1 on failure to

send an alarm message. For example, if alternate numbers are provided and S50 is set to

four then both numbers will be dialed four times before the units stops. If S50 is set to zero

unit will attempt to dial indefinitely and S51 should be set to 3 to comply with Austel

Permit.

S51 Delay Before Redialling

Default : 3

Range : 1 to 256 Seconds (One minute increments)

If the unit is attempting to dial after dropping a previously raised telephone line, the unit

will wait for a interval of S51mins before raising the line again and attempting to dial. If

no alternate number is provided then the unit will wait 2*S51 minutes before redialling.

Attempting to set this value to 0 will result in a default delay of 3 minutes. To comply with

Austel Permit the unit should not be allowed to dial more than 10 times in 30 minutes. It is

recommended that this register should not be changed from the default value.

S52 Delay Before Alarm Message

Default : 0

Range : 0 to 256 Seconds (Increments of 100mS)

This register provides control of the delay before the modem outputs an alarm message to

line. This value in only valid in Constant Speed Interface mode as in MNP modes the

modem monitors the MNP level activity to guarantee reception of the message by the

called party.

S53 MNP Autoreliable Delay

Default : 0

Range : 0 to 256 Seconds (One second increments)

This delay is the period that the modem will attempt to provide an MNP connection before

dropping through to Constant Speed Interface or Disconnecting. When set to 0 then

modem will use a standard 8 second period.