[sr-dev] ENUM module number length limit

[Alex Balashov]

On 03/05/2015 03:30 PM, Daniel-Constantin Mierla wrote:

> The patch came from a German company, because Germany has variable
> length for phone numbers. Apparently 20 is the max size known so far.

That is true, and in fact I don't know of any national dialling plan, 
globally, where the digit length can surpass 20.

However, there are some niche applications of ENUM, i.e. for information 
queries for routing or other intelligent network features, where the 
subject of the query can be quite complex and contain more than just a 
dialling plan-compliant telephone number. For instance, it's not 
uncommon to have routing-related ENUM queries consisting of 
ANI+DNIS+<trunk group or whatever> concatenated.

In light of that, I would recommend that these limits be increased 
significantly.

-- Alex

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Alex Balashov - Principal
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