Mitel Forums > Mitel MiVoice Business/MCD/3300

SIP Trunk gets 503 Service Unavailable

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GZgidnick:
Ralph, I feel obliged to thank you 7 years after this original post.
Dial In Trunks Incoming Digit Modification - Absorb = 0
Who could possibly think of! What a catch!

ralph:
Thank you. GZgidnick.

That's one of the things I like about this forum is that there is a lot of great history building up that always seems to be relevant and useful.
There are so many excellent technical people here willing to share that it certainly makes things a lot easier.
So I put my own great big "Thank You" to everyone who participates.

Ralph

x-man:
Is that not simply that the absorb field or answer point must be filled in; one or the other but not both as they are mutually exclusive? Just to clarify why one or the other must be filled with a value but not both for incoming service to work. Of course if the answer point is invalid then that also would stop incoming calls.

ralph:
If you're expecting digits then you need to apply the absorb 0.
It never made sense to me that you should have to put anything other than a non-0 value it there.   Why wouldn't the assumed value be 0?

If you're not expecting digits, such as with loop start trunks or ARD/MRDs then you need to put a valid ring to destination.
You'd actually have to work pretty hard to put an invalid destination number in there because it checks to be sure it's valid before you can save it.

Ralph

x-man:
Actually I've just remembered that you can't fill one in if the other has an entry as it pops up a error (which is what brought it to mind when you mentioned checking)

I think the thinking may have been that if you are going to be expecting numbers then there cannot be an assumed number to absorb and that 0 is just as valid as 6....?

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