Aastra OpenCom X320 User Guide - Page 13

Q.SIG-IP, DECToverIP, Packet Data in the ISDN D Channel, interfaces of OpenCom X320. A TEI - sip trunk

Page 13 highlights

Features further information on this in the chapter on Voice over IP (VoIP) starting on page 91. SIP OpenCom X320 also provides external SIP connections as "SIP trunk lines. Setting up and using external SIP connections is completely transparent for telephone users, providing them with easy access to low-cost Internet telephony and a fallback to normal ISDN connections in case of error or busy lines. A Media Gateway card is required for SIP telephony. Q.SIG-IP Several communications systems can be networked via IP connections using "Q.SIG IP". Low-cost data connections can be used to network the communications systems of branch offices instead of ordinary permanent ISDN lines. With up to 5 virtual lines, the number of calls which can be made simultaneously between two communications systems is limited only by the band width of the Internet connection. Q.SIG IP can also be operated with a restricted range of functions without a Media Gateway card. DECToverIP® DECT networking via VoIP is another possible option for offices already extensively using VoIP telephony. The Radio Fixed Parts (RFPs) are connected via network data connections, so they do not occupy any Upn ports and can use existing network connections. With DECToverIP, VoIP protocol data is changed into DECT-compatible voice data direct on the RFPs. DECT-RFPs and DECToverIP-RFP can be used together in combination in many cases; it is however not possible to switch between RFPs using different technologies during a call. Packet Data in the ISDN D Channel Some business applications such as POS terminals, cash registers or credit card terminals, require a permanent data connection via the X.25 packet data network. Packet data transfer through the ISDN D channel (according to X.31 via SAPI 16) can also be established between the several S0 interfaces of OpenCom X320. A TEI (Terminal Endpoint Identifier) can be used to distinguish between different simultaneous connections. X.31 packet data can be forwarded between two S0 interfaces (an internal and an external S0 interfaced example). Data can also be forwarded ("routed") via permanent Q.SIG lines. It is possible to operate multiple terminals with the same TEI on different internal S0 interfaces. A TEI mapping table allows these X.31connections to be routed to the same external S0 interface. 11

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Features
11
further information on this in the chapter on
Voice over IP (VoIP)
starting on
page 91.
SIP
OpenCom X320 also provides external SIP connections as “SIP trunk lines. Setting
up and using external SIP connections is completely transparent for telephone
users, providing them with easy access to low-cost Internet telephony and a
fallback to normal ISDN connections in case of error or busy lines. A Media
Gateway card is required for SIP telephony.
Q.SIG-IP
Several communications systems can be networked via IP connections using
“Q.SIG IP”. Low-cost data connections can be used to network the communica-
tions systems of branch offices instead of ordinary permanent ISDN lines. With up
to 5 virtual lines, the number of calls which can be made simultaneously between
two communications systems is limited only by the band width of the Internet
connection. Q.SIG IP can also be operated with a restricted range of functions
without a Media Gateway card.
DECToverIP
®
DECT networking via VoIP is another possible option for offices already extensively
using VoIP telephony. The Radio Fixed Parts (RFPs) are connected via network data
connections, so they do not occupy any U
pn
ports and can use existing network
connections. With DECToverIP, VoIP protocol data is changed into DECT-com-
patible voice data direct on the RFPs. DECT-RFPs and DECToverIP-RFP can be used
together in combination in many cases; it is however not possible to switch
between RFPs using different technologies during a call.
Packet Data in the ISDN D Channel
Some business applications such as POS terminals, cash registers or credit card
terminals, require a permanent data connection via the X.25 packet data network.
Packet data transfer through the ISDN D channel (according to X.31 via SAPI 16)
can also be established between the several S
0
interfaces of OpenCom X320. A TEI
(Terminal Endpoint Identifier) can be used to distinguish between different simul-
taneous connections.
X.31 packet data can be forwarded between two S
0
interfaces (an internal and an
external S
0
interfaced example). Data can also be forwarded (“routed”) via per-
manent Q.SIG lines. It is possible to operate multiple terminals with the same TEI
on different internal S
0
interfaces. A TEI mapping table allows these
X.31connections to be routed to the same external S
0
interface.