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Had a supplier ask this
Custom or National ISDN ?
Can someone educate me on the difference please.\
Thanks
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National ISDN is a NI2 and it is usually DMS100 emulation.. Custom protokol is usually 5ESS AT&T emulation.
Magority Telephone system uses ESF, B8ZS and NI2. But some of them like Avaya Legend require a Custom protokol instead of NI2. Provider's setup and your switch setup MUST be exect match.
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There are two dominant switching systems that provide the ISDN:
-Northern Telecom's DMS100 type switches -Lucent Technologies [formerly a part of AT&T, now Alcatel-Lucent] 5ESS switches
Although both types of switches provide the same basic ISDN functionality, they differ in how they interface ISDN instruments (and other ISDN CPE devices) to the ISDN network. Custom and National ISDN are simply the 2 ISDN software types to adjust to these two switching system differences, and progress towards industry-wide ISDN standardization. This obviously makes it important to know which switch type (and corresponding ISDN software type) is being used to provide the ISDN services. Assigning/configuring the correct ISDN software type (Custom or National) ensures for full system compatibility and access to the entire ISDN network.
National ISDN is the current upgrade of ISDN services to meet an industry-wide ISDN standardization: NI-1: National ISDN version 1 software, Standard BRI and PRI interface. However, a user may see differences in the manner in which a feature operates among different vendors’ products.
NI-2: National ISDN version 2 sofware, same as NI-1, but provides for more standardized operations for some features.
Custom ISDN:
For Nortel DMS: -Custom ISDN MP only (Multi-point)
For 5ESS: -Custom MP (multi-point) -Custom PP (point-to-point)
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Mike pretty much summed it up :bow: . One of the big features NI2 allows is caller ID. And as VAd mentioned, no matter what set up you decide to go with make sure you match what your provider is sending you. A circuit with a mismatched protocol may come up, but it will never work properly, and will cause you all sorts of grief.
I Swear I did not touch anything
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ATT Custom does caller ID also
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There are two types of Caller ID. AT&T Custom offers "number only", while National ISDN offers "name+number" CID.
"Press play and record at the same time" -- Tim Alberstein
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I Swear I did not touch anything
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I have a customer with a PRI that went from a Magix to an IPO with no changes to the circuit. They now get caller id name and number.
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interesting...do you know what type of switch is servicing them?
I Swear I did not touch anything
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Ipofficeguy is right. Magix doesn't provide a name even provider is sending it. That is why IPO is getting both.
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