User`s manual

Mediant 1000
H.323 User's Manual 268 Document #: LTRT-83401
8.8.4 Relevant Parameters
The following parameters (described in Table 5-13) are used to configure the Alternative
Routing mechanism:
 AltRoutingTel2IPEnable
 AltRoutingTel2IPMode
 IPConnQoSMaxAllowedPL
 IPConnQoSMaxAllowedDelay
8.9 Call Termination on Mediant 1000 FXO
The following six methods for call termination are supported by the Mediant 1000/FXO.
Note that the used disconnection methods must be supported by the CO or PBX.
 Detection of polarity reversal / current disconnect:
This is the recommended method. The call is immediately disconnected after polarity
reversal or current disconnect is detected on the Tel side (assuming the PBX / CO
produces this signal).
Relevant parameters: EnableReversalPolarity, EnableCurrentDisconnect,
CurrentDisconnectDuration, CurrentDisconnectDefaultThreshold and
TimeToSampleAnalogLineVoltage.
 Detection of Reorder / Busy / Dial tones:
The call is immediately disconnected after Reorder / Busy / Dial tone is detected on
the Tel side (assuming the PBX / CO produces this tone). This method requires the
correct tone frequencies and cadence to be defined in the Call Progress Tones file. If
these frequencies are not known, define them in the CPT file (the tone produced by
the PBX / CO must be recorded and its frequencies analyzed -- refer to Section E.2.7
on page 407). This method is slightly less reliable than the previous one. You can use
the CPTWizard (described in Section E.1.4 on page 399) to analyze Call Progress
Tones generated by any PBX or telephone network.
Relevant parameters: DisconnectOnBusyTone, DisconnectOnDialTone.
 Detection of silence:
The call is disconnected after silence is detected on both call directions for a specific
(configurable) amount of time. The call isn’t disconnected immediately; therefore, this
method should only be used as a backup option.
Relevant parameters: EnableSilenceDisconnect and FarEndDisconnectSilencePeriod
(with DSP templates number 2 or 3).
 A special DTMF code:
A digit pattern that, when received from the Tel side, indicates the gateway to
disconnect the call.
Relevant ini file parameter: TelDisconnectCode.
 Interruption of RTP stream:
Relevant parameters: BrokenConnectionEventTimeout and
DisconnectOnBrokenConnection.
Note that this method operates correctly only if silence suppression is not used.
 Protocol-based termination of the call from the IP side