[ipcdn] SigMIB Draft 10

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,