AudioCodes Mediant 800 User Manual page 612

CHAPTER 23 Digital PSTN
Parameter
'Call Rerouting Mode'
configure voip >
interface e1-t1|bri >
call-re-rte-mode
[CallReroutingMode]
'ISDN Duplicate Q931
BuffMode'
[ISDNDuplicateQ931BuffMo
de]
Mediant 800 Gateway & E-SBC | User's Manual
✔
If LocalISDNRBSource is set to 1, the device plays a
ringback tone and sends an ISDN Alert with PI = 8 to
the ISDN (unless the [ProgressIndicator2ISDN_x]
parameter is configured differently).
✔
If LocalISDNRBSource is set to 0, the device doesn't
play a ringback tone. No PI is sent in the ISDN Alert
message (unless the [ProgressIndicator2ISDN_x]
parameter is configured differently). In this case, the
PBX / PSTN plays a ringback tone to the originating
terminal. Note that the receipt of a 183 response
results in an ISDN Progress message (unless
SIP183Behaviour is set to 1). If SIP183Behaviour is
set to 1 (183 is handled the same way as a 180 with
SDP), the device sends an Alert message with PI = 8
without playing a ringback tone.
■ [3] Play Local Until Remote Media Arrive = Plays tone
according to received media. The behaviour is similar to
option [2]. If a SIP 180 response is received and the voice
channel is already open (due to a previous 183 early media
response or due to an SDP in the current 180 response),
the device plays a local ringback tone if there are no prior
received RTP packets. The device stops playing the local
ringback tone as soon as it starts receiving RTP packets.
At this stage, if the device receives additional 18x
responses, it does not resume playing the local ringback
tone. Note that for ISDN trunks, this option is applicable
only if LocalISDNRBSource is set to 1.
Determines whether ISDN call rerouting (call forward) is
performed by the PSTN instead of by the SIP side. This call
forwarding is based on Call Deflection for Euro ISDN (ETS-
300-207-1) and QSIG (ETSI TS 102 393).
■ [0] None (default)
■ [1] ISDN Rerouting Enabled = Enables ISDN call
rerouting. When the device sends the INVITE message to
the remote SIP entity and receives a SIP 302 response
with a Contact header containing a URI host name that is
the same as the device's IP address, the device sends a
Facility message with a Call Rerouting invoke method to
the ISDN and waits for the PSTN side to disconnect the
call.
Note: When the parameter is enabled, ensure that you
configure in the IP-to-Tel Routing table (PSTNPrefix ini file
parameter) a rule to route the redirected call (using the user
part from the 302 Contact header) to the same Trunk Group
from where the incoming Tel-to-IP call was received.
Determines the activation/deactivation of delivering raw Q.931
messages.
■ [0] 0 = (Default) ISDN messages aren't duplicated.
■ [128] 1 = All ISDN messages are duplicated.
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Description