From: Scott Roleson <[email protected]> Subject: Re: TSB31, Sect 8.9, "SF Cuttoff"
In his recent message, Christopoulos Costa <[email protected]> said: > Assume a TE has an analog PSTN interface (loop start) and a private > line interface (OPS). Then, according to TSB31 it would have to > comply with Section 8.9 since the TE has a through path from voiceband > private line to the PSTN. > > However, If the TE had an analog PSTN interface (loop start) and an > on-premise (ONS) interface, then Section 8.9 would not be applicable. > Why? It's not clear to me why Section 8.9 of TSB-31B would not be applicable. It says in the background for this section: "The single frequency (SF) cutoff limitations in this section apply only when the EUT has a through path connecting either voiceband private lines, channels, or voiceband metallic channels to other network intervaces." Nothing in the language of this section seems to specifically exclude ONS interfaces (so long as they are "voiceband metallic"), right? Mr. Costa, please clarify. -- Scott R. ----------------------------------------------------------------------- Scott Roleson, PE (MS-61U74) | Internet: [email protected] Telecom & EMC Engineer | http://home.pacbell.net/SRoleson Corporate External Stds | Telephone: +1-619-655-4809 Hewlett-Packard Company | FAX: +1-619-655-5931 16399 W. Bernardo Drive | Amateur Radio: KC7CJ San Diego, CA 92127-1899 USA | Any opinions are my own, not HP's. ----------------------------------------------------------------------- Note: Phone/FAX area codes will change from 619 to 858 on 12 June 1999. Please use [email protected] when you send e-mail to me. (Ignore what the "From" or "Return-Path" lines say above.) Thanks!
