User's Manual 1240 Document #: LTRT-10632
Mediant 800B Gateway & E-SBC
Parameter Description
1 If an isub parameter is received in the Request-URI, for example,
INVITE sip:9565645;isub=1234@host.domain:user=phone
SIP/2.0
then the isub value is sent in the ISDN Setup message as the
destination subaddress.
2 If the isub parameter is not received in the user part of the
Request-URI, the device searches for it in the URI parameters of
the To header, for example,
To: "Alex" <sip: 9565645@host.domain;isub=1234>
If present, the isub value is sent in the ISDN Setup message as
the destination subaddress.
3 If the isub parameter is not present in the Request-
To header, the device does the following:
If the called number (that appears in the user part of the
Request-URI) starts with zero (0), for example,
INVITE sip:05694564@host.domain:user=phone SIP/2.0
then the device maps this called number to the destination
number of the ISDN Setup message, and the destination
subaddress in this ISDN Setup message remains empty.
If the called number (that appears in the user part of the
Request-URI) does not start with zero, for example,
INVITE sip:5694564@host.domain:user=phone SIP/2.0
then the device maps this called number to the destination
number of the ISDN Setup message, and the destination
subaddress in this ISDN Setup message then contains y
from the end of the called number. The y number of digits can
be configured using the ISUBNumberOfDigits parameter. The
default value of ISUBNumberOfDigits is 0, thus, if the
parameter is not configured, and 1) and 2) scenarios
(described above) have not provided an isub value, the
subaddress remains empty.
Default Cause Mapping From
ISDN to SIP
dflt-cse-map-isdn2sip
[DefaultCauseMapISDN2IP]
Defines a single default ISDN release cause that is used (in ISDN-to-
IP calls) instead of all received release causes, except when the
following Q.931 cause values are received: Normal Call Clearing
(16), User Busy (17), No User Responding (18), or No Answer from
User (19).
The range is any valid Q.931 release cause (0 to 127). The default is
0 (i.e., not configured - static mapping is used).
Enable Calling Party
Category
ni2-cpc
[EnableCallingPartyCategory]
Enables the mapping of the calling party category (CPC) between the
incoming PSTN message and outgoing SIP message, and vice versa
(i.e., for IP-to-Tel and Tel-to-IP calls). The CPC characterizes the
station used to originate a call (e.g., a payphone or an operator).
[0] Disable = (Default) CPC is not relayed between SIP and PSTN.
[1] Enable
The CPC is denoted in the PSTN message as follows:
ISDN PRI NI-2: In the Originating Line Information (OLI)
Information Element (IE) of the ISDN Setup message.
MFC-R2: ANI II digits. The device supports the Brazilian and
Argentinian variants. This regional support is configured using the
CallingPartyCategoryMode.
The CPC is denoted in the SIP INVITE message using the 'cpc='
parameter in the From or P-Asserted-Identity headers. For example,
the 'cpc=' parameter in the below INVITE message is set to
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