SIP Telephony
110
Voice over IP (VoIP)
from the Forum 525/526. The series of characters before “@”
is the “User Name” or “SIP Username”. The internal call
number of the user must always be used here (the
Ph.No.
field in the
Configurator
under
User Manager
:
User
). The
series of characters after “@” is the “Domain Name” or the
“SIP Domain”. The IP address of the Forum 525/526 must
always be used here.
z
A STUN server (Simple Traversal of UDP over NAT) or a SIP
proxy is not required because internal SIP subscribers on the
LAN are directly connected to the Forum 525/526. Switch
these functions off if possible.
z
With a SIP terminal, you can enter an international phone
number with a leading plus. When you enter a call number in
the E.123 format, the plus char is substituted by the “00”
number sequence and the immediate line seizure via the
standard route is activated for the call. If you prefer to dial in
this number format, you should activate the international call
number conversion (see
E.164 conversion
starting on
page 157).
Features
SIP subscribers can establish connections to all other terminals
and trunks. The SIP protocol generally works with block dialling.
This is why the selected call number is only activated after an
internal clock has expired or activated immediately via the hash
key (“#”) when dialling. This is why code number procedures
without the hash key and code number procedures with a con-
cluding hash key can be used. An overview of code number proce-
dures that can be used is located in the Configurator on the
Sys-
tem Info
:
Codes
page
.
Activate “SIP phones”. Please also note
the corresponding information in the “Forum 500 / Forum 5000 –
Standard Terminals” user guide.
Alongside code number procedures, SIP subscribers can also use
a series of functional features realized via the SIP protocol. The
Forum 525/526 is the ending for all SIP connections as opposed to
what is usually the case on the Internet. This enables SIP sub-
scribers to use Forum 525/526 features. Direct data exchange is
Summary of Contents for Forum 526
Page 1: ...Belgacom Forum 525 526 Mounting and Commissioning Manual...
Page 231: ......
