Termination Naming - Nortel Media Gateway 3200 User Manual

7.2.6 H.248 Termination Naming
The basic entities controlled by H.248 protocol are called Terminations. Physical
Terminations represent a physical entity and ephemeral Terminations represent the
stream. Ephemeral Terminations exist only during a connection. From version 4.4, the
terminations names are defined by a new set of pattern parameters, as described in the
next section. Backward Compatibility is kept for the previous Terminations. (Refer to
''Backward Compatibility' on page 119'.)
7.2.6.1 Termination Name Patterns
Each termination type name is defined by an ini file or SNMP parameter. The pattern may
contain acceptable characters as defined in H.248. The '*' character is used to represent
the place where a digit should be. Therefore, it can not be part of the name itself. All other
characters, including slash, are considered text.
For example: The pattern "gws*c*" matches the termination name "gws0c1" and also
"gws10c20". The trunk numbers, in this case, are 0 and 10 and the channels are 1 and 20.
PHYSTERMNAMEPATTERN - Pattern of the physical terminations.
LOGICALRTPTERMPATTERN - Pattern for ephemeral terminations based on RTP
stream.
The starting number of each level can be controlled by a set of parameters:
EP_NUM - Controls the numbering of the physical terminations name pattern
EP_NUM_0 - Defines the starting trunk number
EP_NUM_1 - Defines the starting channel number
RTP_NUM - Defines the starting number for the RTP terminations. (The default is 0)
7.2.6.2 Old Termination Naming Method
Physical Termination names have up to three components: Gateway (in this case the MG
3200) name, Trunk name and Endpoint name (for non-trunking gateways, the trunk field
does not exist).
Ephemeral Termination names have two components: The gateway name and a constant
string - 'RTP/' for RTP terminations and 'ATM/' for ATM terminations. So assuming that the
MG 3200 name is 'gw', if the first ephemeral Termination is of RTP type, it is called
'gwRTP/1', and if it is of ATM type, it is called 'gwATM/1'.
Set the name parts using the following ini file parameters (the last two are used only for
physical Terminations):
'GatewayName', 'TrunkName', 'EndpointName'.
Note that the '/' (the forward slash) should be part of the name used. It is not added
automatically.
Note also that for trunking gateways, the 'TrunkName' can NOT be null. The default values
for the Termination name parts for Trunking boards is the default gateway name, 'tgw/';
the default trunk name is 's' and the default Endpoint name is '/c'. So the Termination that
represents B-channel 1 of trunk 0 is 'tgw/s0/c1'.
PSTN Interface - mapping Trunk/B-channel pairs to Endpoints is hardware-specific (refer
to the table, ''H.248 EndPoint Names'' on page 119.) Note that the number of supported
terminations per MG 3200 is equal to the channel density of the MG 3200.
LOGICALRTPTERMPATTERN = "gwrtp/*"
User's Manual 118
MG 3200
Document # LTRT-72704