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About Dialing In to the IP Network via the Gateway
A
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BOUT
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ETWORK VIA THE
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ATEWAY
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BOUT
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SCOPIA 400/1000 Gateway User Guide
Dialing Example 7: IP-ISDN-IP direct dialing—Gateway supports TCS4
The number string 9825645000^3333 is a call from an IP network endpoint
(Endpoint 1) to an IP network endpoint in another zone (Endpoint 2), through a
public ISDN network, as shown in
while Gateway B is set to receive calls in TCS4 mode.
Figure 4-1
IP
Endpoint 1
This number string consists of:
9—The voice call service prefix in Gateway A in Zone A.
82—The service prefix for a 2B video call in Gateway A in Zone A.
5645000—The number of the destination Gateway B on the public
ISDN network.
^—The TCS4 delimiter configured in Gateway A.
3333—The E.164 number of the destination IP Endpoint 2.
I
N
The Gateway is responsible for routing incoming calls to the requested H.323
endpoints on the IP network.
When a terminal or phone on the ISDN network wants to reach an IP endpoint,
it has to dial at least one of the phone numbers assigned to the ISDN line
connected to the Gateway PRI ISDN port.
When a call originating on the ISDN or serial network reaches the Gateway, the
ALL
Gateway routes it to an IP network endpoint. This is achieved through one of
several incoming call routing methods that the Gateway supports. You can
enable any number of routing methods for each port, but at least one method
must be enabled for incoming calls to be routed through that port. The Gateway
routes an incoming call from the ISDN or serial network according to the
routing methods enabled for the ISDN or serial port, following this order of
priority: DID −>TCS4 −>IVR−>Default Extension.
Figure
TCS4 Dialing
Public
ISDN
Gateway A
4-1. Gateway A dials using TCS4,
Endpoint 2
Gateway B
5645000
IP
3333
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