Nortel DMS-250 - Routing; Card Service Response; Routing and Failure Responses

ETSI PRI 13-29
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
ringing phase. During the talking phase of a call, a DTMF receiver can also
detect a reorigination attempt if the value of the office parameter
DIALTONE_AFTER_ANSWER_DURATION in table OFCVAR is within
the range of 0 to 30 seconds.
Furthermore, reorigination is allowed during the disconnect phase of the call
by way of a DTMF receiver. This is the time during which the called party
disconnects and the time that a permanent signal timer expires. This time
can be varied by datafilling the following field with a range of 2 to 30
seconds:
• field PSPDSEIZ in table TRKSGRP for ETSI PRI trunks.
• field SNDRPSIG in table TRKGRP for MR2 and MTUP trunks.
Parameter REORIG_RECEIVERS in table OFCVAR can have three
possible values: STR_AND_DTMF, DTMF_ONLY, and STR_ONLY. The
value STR_ONLY is not supported by this feature since the STR card is not
supported on the DTCO+.
Routing
This feature supports the following NCS responses:
• Card Service Response
• Routing Response
• Failure Response
In case of NCS time out, routing on address digits is attempted. For all
OFFNET calls, the UNIV field in table STDPRTCT is checked to determine
whether the address should be translated using HNPACONT or universal
translation tables. All ONNET calls are blocked.
If the OFCVAR parameter MCCS_STS_ACTIVE is set to “Y”, the STS is
set to the value of MCCS_STS in table OFCVAR. Otherwise, for ETSI PRI
originations, the STS is set to the STS value in table CALLATTR.
Card service response
If the address number is not datafilled in table STDPRTCT, then field
DEFAULT_TRANSLATION in table OFCVAR is checked to determine
HNPACONT or universal routing.
Routing and failure Responses
A routing or failure response returned from the DAP indicates the call is a
VNET card call. The only exception to this is when Application Data Field
(ADF) routing response with action code 32 (EIR no overflow) or 33 (EIR
with overflow) is returned from the DAP. This implies that a Private