User's Manual 620 Document #: LTRT-68822
Mediant 2000
Parameter Description
 [20] T1 HKT ISDN = ISDN PRI (T1) protocol for the Hong
Kong - HKT.
 [21] E1 QSIG = ECMA 143 QSIG over E1
 [22] E1 TNZ = ISDN PRI protocol for Telecom New Zealand
(similar to ETSI)
 [23] T1 QSIG = ECMA 143 QSIG over T1
 [30] E1 FRENCH VN6 ISDN = France Telecom VN6
 [31] E1 FRENCH VN3 ISDN = France Telecom VN3
 [34] T1 EURO ISDN =ISDN PRI protocol for Euro over T1
 [35] T1 DMS100 Meridian ISDN = ISDN PRI protocol for the
Nortelâ„¢ DMS Meridian switch
 [36] T1 NI1 ISDN = National ISDN 1 PRI protocol
 [40] E1 NI2 ISDN = National ISDN 2 PRI protocol over E1
Note: All PRI trunks must be configured as the same line type
(either E1 or T1). The device can support different variants of
CAS and PRI protocols on different E1/T1 spans (no more than
four simultaneous PRI variants).
[ProtocolType_x]
Defines the protocol type for a specific trunk ID (where x denotes
the Trunk ID and 0 is the first trunk). For more information, see
the ProtocolType parameter.
[ISDNTimerT310]
Defines the T310 override timer for DMS, Euro ISDN, and ISDN
NI2 variants. An ISDN timer is started when a Q.931 Call
Proceeding message is received. The timer is stopped when a
Q.931 Alerting, Connect, or Disconnect message is received from
the other end. If no ISDN Alerting, Progress, or Connect message
is received within the duration of T310 timer, the call clears.
The valid value range is 0 to 600 seconds. The default is 0 (i.e.,
use the default timer value according to the protocol's
specifications).
Notes:
 For this parameter to take effect, a device reset is required.
 When both the parameters ISDNDmsTimerT310 and
ISDNTimerT310 are configured, the value of the parameter
ISDNTimerT310 prevails.
[ISDNDMSTimerT310]
Defines the override T310 timer for the DMS-100 ISDN variant.
T310 defines the timeout between the receipt of a Proceeding
message and the receipt of an Alerting/Connect message.
The valid range is 10 to 30. The default is 10 (seconds).
Notes:
 Instead of configuring this parameter, it is recommended to
use the parameter ISDNTimerT310.
 This parameter is applicable only to Nortel DMS and Nortel
MERIDIAN PRI variants (ProtocolType = 14 and 35).
[ISDNTimerT301]
Defines the override T301 timer (in seconds). The T301 timer is
started when a Q.931 Alert message is received. The timer is
stopped when a Q.931 Connect/Disconnect message is received
from the other side. If no Connect or Disconnect message is
received within the duration of T301, the call is cleared.
The valid range is 0 to 2400. The default is 0 (i.e., the default
T301 timer value - 180 seconds - is used). If set to any other
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