Cisco Catalyst 3000, Administration Manual

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Description Setting
This setting specifies whether the gateway connects to a Network
device or to a User device.
Make sure that the two ends of the PRI connection use opposite
settings. For example, if you connect to a PBX and the PBX uses
User as its protocol side, select Network for this device. Typically,
use User for this option for central office connections.
Protocol Side
Select Internal or External for the clock source. Clock
Specify the digital encoding format. Select one of the following
formats:
• a-law—Use for Europe and other countries, except North
America, Hong Kong, Taiwan, and Japan
• mu-law—Use for North America, Hong Kong, Taiwan, and
Japan
PCM Type
Select the line coding from one of the following:
• High Density Bi-polar 3 (HDB3)
• Alternate mark inversion (AMI)
Line Coding
Select the multiframe format of the span from one of the following:
• Cyclic Redundancy Check 4 (CRC4)
• Non Cyclic Redundancy Check 4 (NonCRC4)
Framing
Select whether to enable or disable echo cancellation. Echo Cancellation
If an issue occurs with echo cancellation, select a value to address
the issue. Choose one of the following values:
• 24
• 32
• 48
• 64
• 128 (available with MCS7890C1 internal gateway only)
This option is available only if echo cancellation is
enabled. Note
Coverage (ms)
Administration Guide for Cisco Business Edition 3000, Release 8.6(4)
264 OL-27022-01
Connection Settings