Colleagues,
A
situation has been raised in Belgium where the local telephony requirements
exceed the ETSI EN 300 369-1 definition for RP-AS
In the ETSI document RP-AS is defined as 200 ms to
300 ms in duration.
In the Belgium Belgacom document the RP-AS is
implied as being 340 ms and in field experience this as been verified. Some
CPE devices do not respond if the RP-AS is less than 340 ms.
It does not appear that the maximum ETSI value of
RP-AS is adequate and it does not appear that placing CID during the normal
ring cadence is acceptable.
We therefore have two standards which do not
overlap and therefore we must define a new SigMIB object to define the RP-AS
duration from the ETSI 200 ms min to something in excess of the Belgacom
nominal value of 340 ms.
In the following text draft, I have defined a
new object (#41) with a range of 200-500 ms.
Page 7
Add:
pktcSigDevrpAsDtsDuration – this international object sets the duration
of
the ring pulse
alerting signal prior to CID signaling.
Variations in
national
standards cause CID failure if RP-AS is not defined by local
requirements.
Page 44
Add:
pktcSigDevrpAsDtsDuration OBJECT-TYPE
SYNTAX
Unsigned32 (200..500)
UNITS
"Milliseconds"
MAX-ACCESS
read-write
STATUS current
DESCRIPTION
" This object specifies the duration of the rpASDTS ring pulse
prior
to the start of the transmission of the
FSK or DTMF containing the Caller ID information. It is
only used when pktcSigDevCidMode is rpAsETS. The
following table defines the default values for this object
depending on the signal type:
pktcSigDevCidMode Default
duringringingETS not used
dtAsETS
not used
rpAsETS
250
lrAsETS
not used
lrETS
not used
An attempt to set this object while the value of
pktcSigDevCidMode is not rpAsETS will result in
an 'inconsistent value' error."
REFERENCE
"ETSI-EN-300-659-1 Specification and Belgacom
BGC_D_48_9811_30_09_EDOC version 3.3"
DEFVAL
{ 250 }
::=
{pktcSigDevConfigObjects 41 }
Page 60 Add last
line
pktcInternationalGroup OBJECT-GROUP
OBJECTS
{
pktcNcsEndPntConfigMinHookFlash,
pktcNcsEndPntConfigMaxHookFlash,
pktcNcsEndPntConfigPulseDialInterdigitTime,
pktcNcsEndPntConfigPulseDialMinMakeTime,
pktcNcsEndPntConfigPulseDialMaxMakeTime,
pktcNcsEndPntConfigPulseDialMinBreakTime,
pktcNcsEndPntConfigPulseDialMaxBreakTime,
pktcSigDevRingCadence,
pktcSigDevCidSigProtocol,
pktcSigDevCidDelayAfterLR,
pktcSigDevCidDtmfStartCode,
pktcSigDevCidDtmfEndCode,
pktcSigDevVmwiSigProtocol,
pktcSigDevVmwiDelayAfterLR,
pktcSigDevVmwiDtmfStartCode,
pktcSigDevVmwiDtmfEndCode,
pktcSigDevrpAsDtsDuration,
I understand it may delay Draft 10 but I think it is
necessary.
Regards,