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Bug #2648

closed

osmo-mgw expects connection-ID from call agent in CRCX ?

Added by laforge about 4 years ago. Updated almost 4 years ago.

Status:
Closed
Priority:
Urgent
Assignee:
Category:
-
Target version:
-
Start date:
11/17/2017
Due date:
% Done:

100%

Spec Reference:

Description

I was re-running the MGCP test cases from osmo-ttcn3-hacks and all of them failed.

The odd part is: osmo-mgw appears to be requiring the call agent to include a connection-id.

Connection IDs are allocated by the mgw in response to a CRCX.

See RFC3435 2.1.3.2:

2.1.3.2 Names of Connections

   Connection identifiers are created by the gateway when it is
   requested to create a connection.  They identify the connection
   within the context of an endpoint.  Connection identifiers are
   treated in MGCP as hexadecimal strings.  The gateway MUST make sure
   that a proper waiting period, at least 3 minutes, elapses between the
   end of a connection that used this identifier and its use in a new
   connection for the same endpoint (gateways MAY decide to use
   identifiers that are unique within the context of the gateway).  The
   maximum length of a connection identifier is 32 characters.

Actions #1

Updated by laforge about 4 years ago

  • Assignee changed from dexter to laforge
Actions #2

Updated by laforge about 4 years ago

  • Status changed from New to In Progress
Actions #3

Updated by laforge about 4 years ago

See https://gerrit.osmocom.org/4905 as a starting point. This semantic change of course requires corresponding changes on the BSC side

Actions #4

Updated by laforge about 4 years ago

  • Assignee changed from laforge to dexter
Actions #5

Updated by dexter about 4 years ago

  • % Done changed from 0 to 100

The the method of assigning the connection ID is now changed. Also on the BSC side:

https://gerrit.osmocom.org/4963 bssap: remove libosmo-legacy-mgcp dependancy
https://gerrit.osmocom.org/4964 mgcp: use mgw assigned connection identifiers

Actions #6

Updated by dexter almost 4 years ago

  • Status changed from In Progress to Resolved
Actions #7

Updated by laforge almost 4 years ago

  • Status changed from Resolved to Closed
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