Specifications

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Figure 2-3 System Configuration Interface
Table 2-4 System Configuration Parameters
Name Description
Application Select a gateway application scenario in this field: Audio only, Support
T38 (Fax) and Voice-band Data, Support T38 (CED), Support T38
(CNG), Support Voice-band Data. Voice-band Data service including
Modem, POS and T.30 fax. The gateways support voice service in any
mode.
First digit timer If a subscriber hasn’t dialed any number within a specified time by this
parameter after offhook, the gateways will consider that the subscriber
has given up the call and prompt to hang up in busy tone. Unit: second,
default value: 12 seconds.
Inter-digit timer If a subscriber hasn’t dialed the next number key from the time of
dialing the last number key to the set time by this parameter, the
gateways will consider that the subscriber has ended dial-up and call out
the dialed number. The default value is 12 seconds, unit: second.
Critical digit timer This parameter is used with the "x.T" rule set in dialing rules. For
example, there is "021.T" in the dialing rules table. When a subscriber
has dialed 021 and hasn’t dialed the next number within a set time by
this parameter (eg. 5 seconds), the gateways will consider that the
subscriber has ended dial-up and call out the dialed number 021.
The default value is 5 seconds, unit: second.
Codec Codecs methods supported by the gateways include G729A/20,
G723/30, PCMU/20, PCMA/20, iLBC/30 and GSM/20 (as shown in
table 2-5). This parameter must be set due to no default value.
Several encoding methods can configure in this item at the same time,
separated with “,” in the middle; the gateways will negotiate with the
platform in the order from front to back when configuring the codec
methods
Hook-flash handle The gateways provide the following processing modes after detecting
hook flash from subscriber terminals: processing the hook flash
internally; transmitting the hook flash to platform with RFC 2833, and
transmitting the flash-off to platform with SIP INFO.