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- Path: sparky!uunet!pipex!demon!cix.compulink.co.uk!mandarin
- Newsgroups: uk.telecom
- From: mandarin@cix.compulink.co.uk (Richard Cox)
- Subject: OFTEL number changes
- Cc: mandarin@cix.compulink.co.uk
- Reply-To: mandarin@cix.compulink.co.uk
- Date: Sat, 21 Nov 1992 12:22:00 +0000
- Message-ID: <memo.762343@cix.compulink.co.uk>
- Sender: usenet@gate.demon.co.uk
- Lines: 20
-
- mark@mozart.demon.co.uk (Mark Whalley) writes:
-
- >> The dialled digits are only stored were the exchange can determine the
- >> destination number length. Once this is known then the digits can be sent
- >> en-bloc in an IFAM (Inital & Final Address Message), otherwise an IAM
- >> (Initial Address Message) is sent holding what has been dialled up to now
- >> followed by SAMs (Subsequent Address Message) with the further digits.
-
- >> Obviously it is not sensible for each node to know the dialling plan for
- >> the whole world !
-
- This is true, but we were talking exclusively about calls within the UK: and
- for those calls the digit length is determinable from a lookup table based on
- the first 6 digits dialled. So for UK calls one setup message would suffice.
-
- Richard Cox
-
- Mandarin Technology, Cardiff Business Park, Llanishen, CARDIFF, Wales CF4 5WF
- Voice: +44 222 747111 Fax: +44 222 711111 VoiceMail: +44 399 870101
- E-mail: mandarin@cix.compulink.co.uk Not diallable on 511 in mainland USA
-