For the complete documentation index, see llms.txt. This page is also available as Markdown.

MTP3 parameters

MTP3 signalling links, point codes and routing. 50 parameters.

A

Parameter
Description

Adjacent Point Code

The Origin Point Code parameter is used to associate an object with an adjacent point code.

B

Parameter
Description

Bind Confirmation Timer

Timeout for connection between an SS7 service access point.

Broadcast

The Broadcast parameter is used when the MTP3 is configured as an STP and you want to forward the MTP3 management messages TFA/TFP/TFR.

BSN Request Timer

As part of the changeover procedure on a link, MTP3 sends a status request to layer 2 to return the BSN for that link (Allowed values are from 100ms to 6500000ms.

D

Parameter
Description

Desired State

The Desired State parameter indicates whether an object is to be active or inactive upon creation.

Discard Priority

In networks supporting multiple levels of congestion, if a message is received by MTP3 with a priority less than the current congestion priority of the link (in case the link is congested), then the message is dropped.

F

Parameter
Description

False Congestion Detect Timer

This is the same as timer T31 in ANSI specification (Allowed values are from 100ms to 6500000ms.

Flow Control Request Timer

MTP3 link polling timer to MTP2 link about flow control status.

Flush Continue Flags

Specifies whether FLUSH BUFFER and CONTINUE requests are required to be sent to layer 2 on processor outage recovery.

L

Parameter
Description

Layer 2 Connect Timer

Used by MTP3 to periodically send a connect request to layer 2, if layer 2 is not responding.

Link Referral Craft Timer

This is the same as timer T19 in the ANSI specification.

Link Type

The Link Type parameter is used to set a protocol type for signaling links.

M

Parameter
Description

Messages Priority

Specifies the priority when sending MTP3 management messages.

Msg Q Len Prio0

Priority 0 message queue length (ratio from 0 to 100)

Msg Q Len Prio1

Priority 1 message queue length (ratio from 0 to 100)

Msg Q Len Prio2

Priority 2 message queue length (ratio from 0 to 100)

Msg Q Len Prio3

Priority 3 message queue length (ratio from 0 to 100)

MTP3 C Link

Indicates whether the link is a C link (links between the mated STPs are C links)

MTP3 SLTA Timer

Supervision timer for signalling the link test acknowledgement message (SLTA).

MTP3 Ssf Validation

Determines whether every message is verified against the Ssf mask.

MTP3 T1 Timer

Delay to avoid mis-sequencing on changeover timer (Allowed values are from 100ms to 6500000ms.

MTP3 T12 Timer

Waiting for uninhibit ack timer (Allowed values are from 100ms to 6500000ms.

MTP3 T13 Timer

Waiting for force uninhibit timer (Allowed values are from 100ms to 6500000ms.

MTP3 T14 Timer

Waiting for inhibition ack timer (Allowed values are from 100ms to 6500000ms.

MTP3 T15 Timer

Waiting to start signalling route set congestion test timer.

MTP3 T16 Timer

Waiting for route set congestion status update timer.

MTP3 T17 Timer

Delay to avoid an oscillation of the initial alignment failure timer (Allowed values are from 100ms to 6500000ms.

MTP3 T18 Timer

Waiting for links to become available during restart timer.

MTP3 T19 Timer

Waiting to receive all traffic restart timers.

MTP3 T2 Timer

Waiting for changeover ack timer (Allowed values are from 100ms to 6500000ms.

MTP3 T21 Timer

Waiting to restart traffic routed through an adjacent SP timer.

MTP3 T22 Timer

Local inhibit test timer (Allowed values are from 100ms to 6500000ms.

MTP3 T23 Timer

Remote inhibit test timer (Allowed values are from 100ms to 6500000ms.

MTP3 T26 Timer

Waiting to repeat the "traffic restart waiting" message timer.

MTP3 T3 Timer

Delay to avoid mis-sequencing on changeback timer (Allowed values are from 100ms to 6500000ms.

MTP3 T4 Timer

Waiting for change-back ack (first) timer (Allowed values are from 100ms to 6500000ms.

MTP3 T5 Timer

Waiting for change-back ack (second) timer (Allowed values are from 100ms to 6500000ms.

MTP3 T7 Timer

Waiting for link connection ack timer (Allowed values are from 100ms to 6500000ms.

MTP3 Transfer Restricted required

Route management procedure for national networks.

P

Parameter
Description

Periodic SLTM timer

Interval timer for sending signalling link test messages (SLTM).

Priority

Priority for the link inside the linkset.

Probation Link Oscillation Timer

This is the same as timer T33 in ANSI specification (Allowed values are from 100ms to 6500000ms.

R

Parameter
Description

Restart Procedure

The Restart Procedure parameter is used to indicate the standard by which a configuration will carry out a restart process.

Route to Adjacent

The Route to Adjacent parameter is used when an MTP3 route is directed toward an adjacent network.

S

Parameter
Description

Second Concerned Point Code

Service Point Code

Destination point code of the remote service node.

Signaling Point Type

The Signaling Point Type parameter indicates the intended purpose of an SS7 MTP3 layer object.

SLTM Maximum Retry

Maximum number of SLTM message to retry before declaring the link DOWN

SSf Validation

The SSf Validation parameter allows the activation of sub-service field validation for an MTP3 configuration.

Suspension Link Oscillation Timer

This is the same as timer T34 in ANSI specification.

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