AudioCodes Mediant 600 User Manual page 297

SIP User's Manual
Parameter
Retransmission Parameters
Web: SIP T1 Retransmission
Timer [msec]
EMS: T1 RTX
[SipT1Rtx]
Web: SIP T2 Retransmission
Timer [msec]
EMS: T2 RTX
[SipT2Rtx]
Web: SIP Maximum RTX
EMS: Max RTX
[SIPMaxRtx]
Version 5.8
detection of dial tone before it starts playing DTMF digits. For
example, if the called number is '1007766p100', the device places a
call with 1007766 as the destination number, then after the call is
answered, it waits 1.5 seconds ('p') and plays the rest of the number
(100) as DTMF digits.
Additional examples: 1664wpp102, 66644ppp503, and
7774w100pp200.
Notes:
For this parameter to take effect, a device reset is required.
For analog interfaces: The called number can include characters
'p' (1.5 seconds pause) and 'd' (detection of dial tone). If
character 'd' is used, it must be the first 'digit' in the called
number. The character 'p' can be used several times.
For example (for FXS/FXO interfaces), the called number can be
as follows: d1005, dpp699, p9p300. To add the 'd' and 'p' digits,
use the usual number manipulation rules.
For analog interfaces: To use this feature with FXO interfaces,
configure the device to operate in one-stage dialing mode.
If this parameter is enabled, it is possible to configure the
FXS/FXO interface to wait for dial tone per destination phone
number (before or during dialing of destination phone number).
Therefore, the parameter IsWaitForDialTone (configurable for the
entire device) is ignored.
For analog interfaces: The FXS interface send SIP 200 OK
responses only after the DTMF dialing is complete.
The time interval (in msec) between the first transmission of a SIP
message and the first retransmission of the same message.
The default is 500.
Note: The time interval between subsequent retransmissions of the
same SIP message starts with SipT1Rtx and is multiplied by two
until SipT2Rtx. For example (assuming that SipT1Rtx = 500 and
SipT2Rtx = 4000):
The first retransmission is sent after 500 msec.
The second retransmission is sent after 1000 (2*500) msec.
The third retransmission is sent after 2000 (2*1000) msec.
The fourth retransmission and subsequent retransmissions until
SIPMaxRtx are sent after 4000 (2*2000) msec.
The maximum interval (in msec) between retransmissions of SIP
messages.
The default is 4000.
Note: The time interval between subsequent retransmissions of the
same SIP message starts with SipT1Rtx and is multiplied by two
until SipT2Rtx.
Maximum number of UDP transmissions (first transmission plus
retransmissions) of SIP messages.
The range is 1 to 30. The default value is 7.
297
6. Configuration Parameters Reference
Description
September 2009