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ProNounce - Tips on ISDN
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Tips on Installation and Ordering - You order ISDN from your Local Exchange Carrier. That's BellSouth (now AT&T) in the southeast, BellAtlantic, Verizon, NYNEX in the Northeast, Southwestern Bell in the Texas/Oklahoma region, Quest (formerly USWEST) in the mid west northwest states and PacBell (now AT&T) in California and Nevada. Your LEC is the first place to go for installation of an ISDN line. If they don't offer ISDN, research the CLECs (Competitive Local Exchange Carriers) in your area and give them a call. When you finally wind up in the sales office responsible for ISDN orders, make sure you communicate these points:
- You want a 2B+D BRI ISDN line configured for Voice and Data. Even though you are transmitting your voice, you do not want an ISDN line configured for Voice alone.
- You want no inbound or outbound calling restrictions. (For some reason, ISDN lines are commonly turned on with restrictions.)
- You want a long distance carrier attached and no LD restrictions. You must be ready to specify the LD carrier you want to use. Use either Sprint or AT&T. Do not go with value carriers. They often employ dynamic routing of your calls which, if not sensitive to the fact that your call is a 64k data call, can be trunked over networks which might compress your call to 32k per channel and introduce high bit error rate.
- You do NOT want bonding of the B channels. Bonding is done inside the codec.
- When the installer shows up ask him for the SPIDS for your ISDN line. You will need them to program the terminal adapter inside your codec.
- Some LECs use ordering codes to make things easier. If your LEC understands ordering codes, tell them you want either Code R or Code S. Or, if the LEC uses "Capability Codes" tell them you want "GENERIC DATA I" or "Capability Code R.
- Musicam offers a 5 page PDF document that you can fax to your LEC to help communicating the configuration you need. This document works if you have a Telos too.
- You should call the LD carrier you specified when ordering your ISDN line to advise them you have just turned on an ISDN line. This is not the norm when ordering a standard voice line but it's a good idea when ordering ISDN.
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