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Administrator’s Guide for Cisco IPVC 3521 BRI Gateway, Cisco IPVC 3526 PRI Gateway, and Cisco IPVC 3540 PRI Gateway
OL-7995-01
Chapter 3 Configuring the Cisco IPVC 3500 Series Gateway
Configuring Gateway Settings
Step 6
In the
Signaling Protocol
field, choose the signaling protocol used to setup and tear down calls through
the signaling (D) channel. Depending on the interface used, different signaling protocols are available
for selection.
Step 7
In the
PCM Audio Format
field, choose the desired G.711 audio standard:
A-Low
or
U-Low
.
Note
You can only make this setting if you select
Taiwan
in the
Country
field. Skip to step 8
otherwise.
Step 8
In the
Directory Numbers
section, enter the phone numbers for the BRI line in the
Number 1
and
Number 2
fields.
Step 9
Click
SPIDs
to configure Service Profile Identification (SPID) values for this BRI line. The SPID value
is provided by the telecom company and indicates which services a specified BRI line supports (for
example, phone, fax, or videoconferencing facilities).
Note
You can only configure SPID values if you select
DMS100
,
National ISDN
, or
5ESS
Custom/Multipoint
options in the
Signaling Protocol
field of the Physical Interface section,
and when the
Country
field is set to
US
. Skip to step 14 otherwise.
The
SPIDs
dialog box appears.
Step 10
In the
Number of SPIDs
field, choose the required number of SPID values.
Step 11
In the
SPID 1
field, enter the first SPID value.
Step 12
In the
SPID 2
field, enter the second SPID value.
Step 13
Click
OK
to upload these changes to the gateway database and close the SPIDs dialog box.
Step 14
Click
Advanced
to enable or disable alerting, Layer 1 line hunting, or configure a static Terminal
Equipment Identifier (TEI).
The
Advanced
dialog box appears.
Step 15
Select the
Enable Alerting
check box for the gateway to connect a voice call that is not rejected (instead
of sending alert messages to the caller).
The alerting feature is relevant for incoming voice calls routed directly to an endpoint (through DID) or
to a default extension. When you select this option, the gateway sends an alert message to the dialing
ISDN terminal if the call is not connected within a few seconds. This informs the ISDN terminal that the
call is not yet connected to the local IP endpoint. As a result, the ISDN terminal continues to hear a
ringing sound until the gateway connects to the call.
Note
The gateway connects the call even if the endpoint on the local IP network has not yet accepted
it. If the IP endpoint does not accept the call, the call is rejected and immediately disconnects
from the ISDN terminal.
This setting is selected by default. Unselect it to prevent the gateway from sending an alert message.
Step 16
Select the
Enable Layer 1 Line Hunting
check box if you do not want the gateway to hunt BRI lines
whose Layer 1 is not activated. This setting is unselected by default.
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