Connection Via Q.sig.ip - BELGACOM Forum 523 Mounting And Commissioning Manual

158 IP Network Connections
ous features of these protocols are summarised in the following
table:
TC system networking via network connections
Feature
Establishing a call ("basic call") with
call-number transmission
name information transmission
single number dial possible
transparent codec interconnection
automatic feature detection

Connection via Q.SIG.IP

The Forum 523/524 communications system supports transmis-
sion of the Q.SIG protocol – intended for ISDN point-to-point
connections – via network connection (Q.SIG-IP). Protocol and
call data are exchanged using IP connections with Q.SIG-IP.
The number of simultaneous conversations possible will depend
on the capacity of the network or internet connection and the
compression method used. A multiple S
tion is simulated for each Q.SIG-IP bundle. This means that 5 vir-
tual D channels and up to 120 voice channels are available. The
Media Gateway Card channels are used for Q.SIG-IP (see MGW
Interface Card starting on page 116). Q.SIG-IP connection data
are subject to codec compression (please refer to Voice over IP
(VoIP) chapter regarding Fundamentals starting on page 107).
Q.SIG-IP also transfers the voice data directly from terminal to
terminal via the RTP protocol. In certain cases, for example, when
an incoming external call is placed via multiple TK systems, one or
more RTP proxies may be used to forward the connection.
Currently, there are no standards for the necessary extensions to
the Q.SIG protocol. This means that you can only use Q.SIG-IP
between Forum systems.
PBX Networking
Q.SIG-IP SIP
tie line
yes yes
yes yes
yes no
no yes
no yes
point-to-point connec-
2M