User guide

Dialogic

DSI Development Package for Linux - Release Notes Release Notes for V5.11

2.2 Increased message-length support for SCTP

In this release the SCTP module has been enhanced to offer support for

longer payload messages that exceed the normal MTP2 limit of 272 octets.

SCTP is now capable of sending and receiving payload messages with up to

4200 bytes in the parameter area of the message.

Use of this feature requires that the software environment is appropriately

configured so as to have a pool of ‘Long Messages’ using the NUM_LMSGS

command in sxstem.txt. For full details relating to the capabilities and usage

of Long Messages refer to the release notes for V5.00.

If for any reason (e.g. exhaustion of the Long Message pool) the SCTP

module is unable to allocate a message with sufficient capacity to store the

received message then a management event indication

MGT_MSG_EVENT_IND (0x0008) with status set to SCTP_RX_DISCARD

(0xf0) is sent to the SCTP module’s management module.

From this release, the s7_mgt module configures the SCTP module’s

management module to be the value specified in the MGMT_MOD_ID

command with a default value of 0xef.

Check the release documentation to determine whether the SCTP user

module (e.g. M2PA, M3UA or SUA) supports Long Messages.

The per-association statistics message (SCTP_MSG_R_STATS) has been

extended by the addition of an rx_discard field to count any discarded

incoming messages. The new field ‘rx_discard’ is offset 49, size 4 in the

parameter area of the message. The new message length is 53 bytes.

2.3 GCTLOAD – Verification

GCTLOAD has been updated to support a new, optional, system.txt

command, VERIFY. Inclusion of VERIFY in system.txt will cause GCTLOAD to

verify that the host operating system has been correctly configured to create

the message queues and messages defined in the system.txt file.

Full details of this command are provided in the Dialogic

Distributed

Signaling Interface Components - Software Environment Programmer's

Manual, U10SSS Issue 7.

2.4 GEN_MSG_MOD_IDENT for SSDS and DTC

The GEN_MSG_MOD_IDENT message may be used to request a Revision

Identifier for a module. Support for this message has been added to the

SSDS and DTC modules.

NOTE: The Core Revision Identifier is returned by this message. This is not

the same as the Binary version that is reported, for example, by the ssds –v

command line parameter.

2.5 Configuration of Sigtran Links by s7_mgt

The s7_mgt module passes dimensioning parameters to the M2PA and M3UA

modules in the appropriate configuration message. In previous releases fixed

values were used for these dimensioning parameters.