Dial delay on trunk group seizure with Speed Dial

[hnorbi]

Dear all,

I try to set a H323 link to an Asterisk server.
I do all at OXE side what described in OXE-OXO H.323 trunking TCO584.pdf.
When I call 7635...
* 76 is the direct speed dial no. prefix
* Call type: IP, IP Add: Asterisk
* Call Number: A1112

In Translator / Prefix plan:
* A11 - Prof trunk seize, Prefix info 11

In Trunk Groups - TG 11
Number Compatible With: -1
Number of Digits to send: 4


The call work fine, but when I dial 7635, the soft key sasy "Send..." (or Sending...), the call initialized immediately when I press it, or press "#" as end of dial key... or when I wait about 10-12 sec.

What is this delay? The 4 digits already exists, when I try to press more digits (for example 76351), the last digit lost.

So how can I speed up it?

Thanks,
Norbert