AudioCodes E-SBC User Manual page 583

CHAPTER 23 Digital PSTN
Parameter
'B-Channel Negotiation'
configure voip >
interface e1-t1 > b-
channel-nego-for-
trunk
[BChannelNegotiationForTru
nk]
'Digital Out-Of-Service
Behavior'
configure voip >
interface e1-t1 >
dig-oos-behavior
[DigitalOOSBehaviorForTrun
k_x]
Mediant 1000 Gateway & E-SBC | User's Manual
■ The MaxDigits parameter can be used to limit the length of
the collected number for ISDN overlap dialing (if Sending
Complete is not received).
■ If a digit map pattern is defined (using the DigitMapping or
DialPlanIndex parameters), the device collects digits until
a match is found (e.g., for closed numbering schemes) or
until a timer expires (e.g., for open numbering schemes). If
a match is found (or the timer expires), the digit collection
process is terminated even if Sending Complete is not
received.
■ For enabling ISDN overlap dialing for IP-to-Tel calls, use
the ISDNTxOverlap parameter.
■ For more information on ISDN overlap dialing, see
Overlap Dialing.
Determines the ISDN B-channel negotiation mode, per trunk.
■ [-1] Not Configured = (Default) Use per device
configuration of the BChannelNegotiation parameter.
■ [0] Preferred
■ [1] Exclusive
■ [2] Any
Note: The option Any is applicable only if TerminationSide is
set to 0 (i.e., User side).
Defines the method for setting digital trunks to out-of-service
state. The parameter is defined per trunk. The parameter is
applicable to the Busy Out feature (see the EnableBusyOut
parameter) and the Lock/Unlock per Trunk Group feature
performed in the Trunk Group Settings table of the Web
interface.
■ [-1] Not Configured = (Default) Use the settings of the
DigitalOOSBehavior parameter ("global" parameter that
applies to all trunks).
■ [0] Default =
✔
ISDN: Sends ISDN Service messages to indicate
out-of-service or in-service state for ISDN variants
that support Service messages. For ISDN variants
that do not support Service messages, the device
sends an Alarm Indication Signal (AIS) alarm.
✔
CAS: Sends an Alarm Indication Signal (AIS) alarm.
■ [1] Service = (Applicable only to T1 ISDN variants that
support this method)Sends ISDN Service messages
indicating out-of-service or in-service state.
✔
Graceful out-of-service disabled: The device rejects
new incoming calls and immediately takes all
channels (idle and busy) out-of-service, by sending
Service messages on the B-channels. The device
disconnects busy channels before it sends out-of-
service Service messages on them.
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Description
ISDN