Controller Numbering - Cisco VGD-1T3 Software Configuration Manual

Configuring ISDN PRI
This process varies from provider to provider on a national and international basis. However, some
general guidelines follow:
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•
•
Table 2
switch.
Table 2
Attribute
Line format
Line coding
Call type
Speed
Call-by-call capability
Channels
Trunk selection sequence
B + D glare
Directory numbers
SPIDs required?

Controller Numbering

The T1 controller numbering convention is slot/port in CLI commands. Feature card slot numbering
starts from the motherboard and works up from left to right. Slot 0 is reserved for the motherboard.
T1 feature card slots are numbered sequentially from 1 to 7. Port numbering is from 0 to 7.
The channelized T3 controller numbering convention is slot/ds3 port in CLI commands. Feature card
slot numbering starts from the motherboard and works up from left to right. Slot 0 is reserved for the
motherboard. Feature card slots are numbered sequentially from 1 to 7. Port number value is always 0.
Under the channelized T3, the T1 channel numbering convention is slot/ds3 port:ds1 port in CLI
commands. The port number is always 0 for the CT3 card. The DS1 port numbering values range from 1
to 28.
Cisco VGD 1T3 Voice Gateway Software Configuration Guide
52
Basic Configuration Using the Command-Line Interface on the Cisco VGD 1T3 Voice Gateway
Determine if the outgoing B channel calls are made in ascending or descending order. The Cisco IOS
software default is descending order; however, if the switch from the service providers is configured
for outgoing calls made in ascending order, the router can be configured to match the switch
configuration of the service provider.
Ask for delivery of calling line identification. Providers sometimes call this CLI, or automatic
number identification (ANI).
If the gateway will be attached to an ISDN bus (to which other ISDN devices might be attached),
ask for point-to-multipoint service (subaddressing is required) and a voice-and-data line.
provides a sample of the channelized T1 configuration attributes you might request for a PRI
Channelized T1 Configuration Attributes
Value
Extended super frame (ESF) format
Binary 8-zero substitution (B8ZS)
23 incoming channels and 23 outgoing channels
64 kbps
Enabled
23 B + D
Either ascending order (from 1 to 23) or descending order (from 23 to 1)
Yield
Only 1 directory number assigned by service provider
None