Trunks
ISDN
Strata CTX Programming - Part 2: CTX WinAdmin Programming 6/04 6-27
Trunks
07 D Ch Position PRI includes a 64-kbps D-channel (for transfer of signal information). Select the
channel position to be used for D channel signaling.
Note This field is used only when the span interface speed is 1.5M. If the span
interface speed is 2M the value is fixed at 16.
Possible values: 0 ~ 24 (default = 24)
08~13 Bearer Services:
• Speech
• 3.1 KHz Audio
• 7 KHz Audio
• Unrestr. 64K
• Unrestr. 56K
• Unrestr. 2x64K
1. Enable the Bearer Capabilities allowed for this PRI Trunk channel group.
Possible values: Enable (default) or Disable
2. Select the Channel Method (map) to identify the channels.
Note In North America, only Channel Number map is used (Channel Number).
See Table 6-2.
Possible values: Channel Number (default) or Slot Number
14~18 Bearer Services:
• Unrestr. 384K
• Unrestr. 1536K
• Unrestr. 1920K
• Restr. Digital
• Video
1. The Bearer Capabilities (384k Unrestricted(H0), 1536k Unrestricted(H11),
1920k Unrestricted, Restricted Digital Info, Trunk Video, and Unrestricted
Multirate) are not used and should remain disabled.
Possible values: Enable or Disable (default)
2. Select the Channel Method (map) to identify the channels.
Note In North America, only Channel Number B map is used. See Table 6-2.
Possible values: Channel Number B (default), Channel Number H, Slot Map B or
Slot Map H
19 Bearer Svc Multirate
Unrestricted
The Bearer Capabilities 384k Unrestricted (H0), 1536k Unrestricted (H11), 1920k
Unrestricted, Restricted Digital Info, Trunk Video and Unrestricted Multirate are not
used and should remain disabled. See Table 6-2.
Possible values: Enable or Disable (default)
20 B Ch Selection Method The method used for selecting an idle ‘B’ channel and the reaction if the PSTN
indicates the channel is not available needs to be chosen to originate a call from
CTX.
Possible values: Explicit (default), Preferred or Any Channel
Preferred option is recommended, unless PSTN needs other choice.
21 B-Ch Selection The search method for choosing an idle ‘B’ channel shall also be specified.
Backward Terminal is the normal method with the PSTN following a Forward
Terminal method.
Possible values: Forward Cyclic, Backward Cyclic, Forward Terminal or
Backward Terminal (default)
22 T1 Time Slot Pattern 1544 Time Slot Pattern.
Possible values: Fixed1 (default), Flexible or Floating
23 E1 Time Slot Pattern 2048 Time Slot Pattern
Possible values: Fixed1 (default), Fixed2 or Flexible
24 T-Wait Timer Specify whether the T-Wait timer is to be enabled or disabled. This field is only
valid for Nat’l ISDN. This should not be enabled for PRI, it is for BRI.
Possible values: Enable or Disable (default)
FIELD DESCRIPTION
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