Features
13
You can integrate external telephony applications via the extended CSTA
interface. The extended CSTA interface is licensable separately (see
Networking
As your company’s requirements grow, Forum 523/524 can be networked
with other communications systems via permanent ISDN lines (“Q.SIG”) or via
Internet connections (“Q.SIG-IP” or “SIP-Tie-Line”), connecting distant loca-
tions and branch offices in a single, comprehensive telephone network.
Forum 523/524 can for example, operate as a sub-system or a DECT server
via the Q.SIG / SIP-Tie-Line network. This type of networking is described in
the chapter on
DECT Networks
Forum 523/524 supports the setting up of a DECT network, enabling mobile
office communications. For larger offices, using several DECT stations (RFP,
Radio Fixed Parts) can expand wireless network coverage and provide a trans-
parent handover between the RFPs while maintaining the telephone
connection.
Handsets as system terminals with all the system telephone features are
available for DECT telephony and handsets using GAP and CAP standards are
also supported. The handover between the RFPs also functions with
handsets using the GAP standard.
Up to 4 calls can be made simultaneously via an RPF, and up to 8 calls can be
made simultaneously if an RFP is connected via 2 U
pn
connections. The DECT
network can also be operated using VoIP (see
Voice over IP (VoIP)
Forum 523/524 supports the connection of VoIP terminals, enabling the
company’s existing internal network infrastructure (LAN with 100 MBit/s) to
be used for telephony as well. VoIP system telephones of the
Forum IPhone 525 and Forum IPhone 535 types are available for this
purpose. These devices have the same functionality and support the same
features as the non IP-enabled system terminals.
The eight gateway channels of an installable Media Gateway card are auto-
matically switched on for telephone calls between IP terminals and ordinary
terminals, for data compression, for the generation of DTMF and dial tones
and for echo suppression. It is also possible to use a limited range of VoIP
Summary of Contents for forum 523
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