Snom 100 v1.9a User Manual page 22

E.164 numbers
TIP
E.164 is the standard that defines normal
phone numbers. They may contain digits
from 0-9, * and #. H.323 differentiates be-
tween these numbers and "H.323 ad-
dresses" which may contain alphanumeric
characters. Several Gatekeeper implementa-
tions do not differentiate E.164 numbers and
H.323 addresses. In case you encounter
problems then try to specify the number as
an H.323 address.
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