[Asterisk-Users] Advice on BT ISDN Services (UK)

[Benjamin Johnson]

Well I've just called BT, the confirmed to me that MSNs can only work 
with PTMP and DDIs with PTP. As for the seqential MSN issue, they have 
assigned me the five I requested - but not sequential. They did explain 
to me that they were automatically assigned randomly. I asked them to 
escalate my request for sequential MSNs and they have, will get back to 
me by the end of the day (or so they say).

Is there any reason (other than cost) to use MSNs over DDIs or the other 
way round?

Thanks for your help everyone - has been very useful. Can anyone 
recommend a good book or online reference for ISDN?

Cheers,

Benjamin Johnson




Nick Barnes wrote:

>If you want sequential numbers, then you'll have to argue like mad to get
>them as MSNs (I managed to get a block of 5 sequential MSNs, but it was hard
>work!). DDIs are issued in blocks of 10 and are usually sequential.
>

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