ISDN parameters

ISDN PRI/BRI and Q.931 settings. 35 parameters.

F

Parameter	Description
Force wake up action	Force the local ISDN stack to send SABME to bring up the D-Channel.

H

Parameter	Description
Hardware CPU usage high threshold	Hardware CPU usage threshold to start dropping all incoming calls.
Hardware CPU usage low threshold	Hardware CPU usage threshold to start dropping some incoming calls.

I

Parameter	Description
ISDN Variant	The Variant parameter indicates the protocol variant to be used on a signaling stack.

M

Parameter	Description
Maximum call burst	Maximum call burst over the rate limit.
Maximum calls per second	Mximum number of calls per second to allow on this NAP.
Maximum simultaneous incoming calls	The maximum number of concurrent incoming calls.
Maximum simultaneous outgoing calls	The maximum number of concurrent outgoing calls.
Maximum simultaneous total calls	The maximum number of concurrent incoming and outgoing calls.

O

Parameter	Description
Options	Bitfield-enabled quirks that make the stack non-compliant but can be necessary for interoperability: 16 = Ignore incoming ALERT in Q.931 state 4 User-side 32 = Ignore incoming bearer capability encoding 64 = Ignore DMS CNG presentation rest

P

Parameter	Description
Primary D Channel Line Service	The line service (trunk) that will be controlled by the ISDN stack instance.
Processing delay high threshold	CPU congestion threshold to start dropping calls.
Processing delay low threshold	CPU congestion threshold to start dropping calls.

S

Parameter	Description
Side	The Side parameter is used to define each side of an ISDN stack.
SS7 or ISDN: Always Send ALERTING	Always send ALERTING before CONNECT (ISDN).
SS7 or ISDN: Caller name (CNAM) using alternate methods	Retrieve 'caller name' (CNAM) using supplementary services (ISDN) or with out-of-call methods (SS7).
SS7 or ISDN: CNAM collection timeout	Maximum time to wait for CNAM to be received from network-side.
SS7 or ISDN: Information Transfer Capability	Speech * Speech (val=0x00) Digital * Unrestricted digital information (val=0x08) Restricted digital * Restricted digital information (val=0x09) 3.1 kHz audio * 3.1 kHz audio (val=0x10) Digital with tones * Unrestricted digital information w
SS7 or ISDN: Network Specific Facilities IE	Network specific facilities information element in SETUP.
SS7 or ISDN: Relay release location from other leg	Relay release location from other leg.
SS7 or ISDN: Send Connected Number IE	Insert connected number information element (ISDN and SS7).
SS7 or ISDN: Send Display IE	Insert display information element (ISDN and SS7)
SS7 or ISDN: Support 2 Calling Number IE	Support 2 calling numbers in SETUP (ISDN).

T

Parameter	Description
T301 Timer	Maximum time to wait between a recieved ALERT and a CONNECT.
T302 Timer	Maximum time to wait for incoming overlap call information.
T303 Timer	Maximum time to wait for a response to an outgoing SETUP message.
T304 Timer	Maximum time to wait for call acceptance after sending last overlap call information.
T305 Timer	Maximum time to wait for a RELEASE after a DISCONNECT is sent.
T307 Timer	Maximum time to wait for an ACK after a SUSPEND request.
T308 Timer	Maximum time to wait for a RELEASE_COMPLETE after a RELEASE is sent.
T309 NET5 Timer	NET5 guard timeout to keep active calls during layer 2 disconnection.
T309 Timer	Guard timeout to keep active calls during layer 2 disconnection.
T310 Network Timer	Maximum time to wait for a ALERT, CONNECT or DISCONNECT after a received CALL PROCEEDING.
T313 Timer	Maximum time to wait for an acknowledge to an outgoing CONNECT.
T316 Timer	Maximum time to wait for an acknowledge to an outgoing RESTART.