4-2
Administrator’s Guide for Cisco IPVC 3521 BRI Gateway, Cisco IPVC 3526 PRI Gateway, and Cisco IPVC 3540 PRI Gateway
OL-7995-01
Chapter 4 Using the Cisco IPVC 3500 Series Gateway
About Dialing Out to the ISDN Network Through the Gateway
•
12015294300—The destination phone number including the area code.
The bit rate of the call is fixed according to the setting in the source IP network terminal.
Dialing Example 3: 1B video calls
The number string 821816455318 is a 1B video call from an IP network terminal to an H.323 endpoint
on another IP network or to a terminal on the ISDN network. This number string consists of:
•
82—The service prefix for a 1B video call.
•
1816455318—The destination phone number including the area code.
About Second Number Delimiters
To dial an outgoing 2B call, you dial the service prefix for 1B calls and the two B channel phone
numbers. Because some H.323 endpoints do not support dialing long number strings or two phone
numbers, you can use a delimiter to indicate to the gateway the end of one number and the beginning of
the other. See the
“Configuring Outgoing Call Delimiters” section on page 3-10
for more information.
Dialing Example 4: 2B video calls
The number string 821816455318* is a 2B video call from an IP network terminal to an H.323 endpoint
on another IP network or to a terminal on the ISDN network. Both B channels have the same number.
This number string consists of:
•
82—The service prefix for a 2B video call.
•
1816455318—The destination phone number including the area code.
•
*—The second number delimiter. The second number delimiter tells the gateway to dial the
destination phone number a second time.
Dialing Example 5: 2B video calls
The number string 821816455318*1816455319 is a 2B video call from an IP network terminal to an
H.323 endpoint on another IP network or to a terminal on the ISDN network. The B channels have
different numbers (or your endpoint does not have two phone number fields). This number string consists
of:
•
82—The service prefix for a 2B video call.
•
1816455318—The destination phone number including the area code.
•
*—The second number delimiter.
•
1816455319—The second B channel number including the area code.
Dialing Example 6: 6B bonded high quality video calls
The number string 867455001 is a 6B bonded high quality video call from an IP network terminal to an
ISDN network terminal. This number string consists of:
•
86—The service prefix for 6B bonded calls.
•
7455001—The phone number of the destination terminal.
Dialing Example 7: IP-ISDN-IP direct dialing—Gateway supports TCS4 (PRI and BRI Gateways only)
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
Figure 4-1
.
Gateway A dials using TCS4, while Gateway B is set to receive calls in TCS4 mode.
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