RE: Re: IETF IPCDN Signaling MIB - Draft 3 - Last Call fo r Comments (pktcSigDevToneDbLevel syntax & range)

Beacham Gordon-CGB005 <[email protected]>
Newsgroups gmane.ietf.ipcdn
Message-ID <D5A7E45D575DD61180130002A5DB377C06528C21@ca25exm01> 
Yes agreed. The SYNTAX for pktcSigDevToneDbLevel has been changed to "TenthdBm".

Also, after further review, Motorola recommends the range of this object be changed to (-250..30). Per EN 300 001 the largest signal level for voice band tones is 0 dBm. Considering G.711 PCM coding allows amplitudes slightly above + 3 dBm, it would appear that the voice band tone maximum specification could be set to +3 dBm and meet the intent of the ETSI specification. This range (-250..30) is specified at the analog POTs interface (i.e., the a-b terminals).
>> Also, is it intentional that the SYNTAX of the
>> pktcSigPulseSignalDbLevel object is TenthdBm, and that it is
>> Integer32 for pktcSigDevToneDbLevel?
>We agree. By using "TenthdBm" SYNTAX in all "dB" related MIB objects we would make the SIG MIB more consistent

Gordon Beacham
Digital Core Gateways, BCS
Motorola, Inc.
858-404-2335
[email protected]
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