Language element

Naming convention

Prefix

Example identifier

Notes

Module

Use upper-case initial letter

none

IPv6Templates

Group within a module

Use lower-case initial letter

none

messageGroup

Data type

Use upper-case initial letter

none

SetupContents

Message template

Use lower-case initial letter

m_

m_setupInit

Note 1

Message template with wildcard or matching expression

Use lower-case initial letters

mw_

mw_anyUserReply

Note 2

Modifying message template

Use lower-case initial letter

md_

md_setupInit

Note 1

Modifying message template with wildcard or matching expression

Use lower-case initial letters

mdw_

mdw_anyUserReply

Note 2

Signature template

Use lower-case initial letter

s_

s_callSignature

Port instance

Use lower-case initial letter

none

signallingPort

Test component instance

Use lower-case initial letter

none

userTerminal

Constant

Use lower-case initial letter

c_

c_maxRetransmission

Constant (defined within component type)

Use lower-case initial letter

cc_

cc_minDuration

External constant

Use lower-case initial letter

cx_

cx_macId

Function

Use lower-case initial letter

f_

f_authentication()

External function

Use lower-case initial letter

fx_

fx_calculateLength()

Altstep
(incl. Default)

Use lower-case initial letter

a_

a_receiveSetup()

Test case

Use ETSI numbering

TC_

TC_COR_0009_47_ND

Note 3

Variable (local)

Use lower-case initial letter

v_

v_macId

Variable
(defined within a component type)

Use lower-case initial letters

vc_

vc_systemName

Timer (local)

Use lower-case initial letter

t_

t_wait

Timer (defined within a component)

Use lower-case initial letters

tc_

tc_authMin

Module parameters

Use all upper case letters

none

PX_MAC_ID

Note 3

Formal Parameters

Use lower-case initial letter

p_

p_macId

Enumerated Values

Use lower-case initial letter

e_

e_syncOk

NOTE 1:    This prefix must be used for all template definitions which do not assign or refer to templates with wildcards or matching expressions, e.g. templates specifying a constant value, parameterized templates without matching expressions, etc.

NOTE 2:    This prefix must be used in identifiers for templates which either assign a wildcard or matching expression ( e.g., ?, *, value list, ifpresent, pattern, etc) or reference another template which assigns a wildcard or matching expression.

NOTE 3:    In this case it is acceptable to use underscore within an identifier.

Example 2: WiMax Project Specific Naming Conventions

The table below shows how the WiMAX project uses the Generic TTCN-3 Naming Conventions. Any changes to the Generic TTCN-3 Naming Conventions are marked in red. In addition to these naming conventions, the WiMAX project has defined its project specific naming conventions which can be consulted in the appropriated documents.

Language element	Naming convention	Prefix	Example	Notes
Module	Use upper-case initial letter	none	WMx_NCT_CommonFns
Group within a module	Use lower-case initial letter	none	messageGroup
Data type	Use upper-case initial letter	none	SetupContents
Message template	Use lower-case initial letter	m_	m_setupInit
Message template with wildcard or matching expression	Use lower-case initial letters	mw_	mw_setupBasic
Signature	Not used.
Port instance	Use lower-case initial letter	none	signallingPort
Test component instance	Use lower-case initial letter	none	userTerminal
Constant	Use lower-case initial letter	c_	c_maxRetransmission
Function	Use lower-case initial letter	f_	f_authentication()
External function	Use lower-case initial letter	xf_	xf_calculateLength()	NOTE 1
Altstep	Use lower-case initial letter	a_	a_receiveSetup()
Test case	Use ETSI numbering	TC_	TC_SS_CDM_CDC_DL_BV_H002
Variable (local)	Use lower-case initial letter	v_	v_basicCid
Variable (defined within a component)	Use lower-case initial letter	vc_	vc_ssSimu
Timer	Use lower-case initial letter	t_	t_wait t_auth_min	NOTE 2
Timer (defined within a component)	Use lower-case initial letter	t_	t_wait	NOTE 1
Module parameters	Use all upper case letters	none	PIC_T7 PXT_TNOAC
Formal Parameters	Use lower-case initial letter	p_	p_macId
Enumerated Value	Use lower-case initial letter	e_	e_synCpk