Trunks
ISDN
Strata CTX Programming - Part 2: CTX WinAdmin Programming 04/03 6-29
Trunks
Call-by-Call
Programs Used: 324 and 323
Call-by-Call service allows multiple facilities to share a PRI channel group. Traffic requirements of
different facilities vary at different times, and sharing B channels on a Call-by-Call basis makes it possible
to use fewer B channels to perform an equivalent service to the discrete counterpart.
1. Complete the “324 CBC Time
Zones” on page 6-30.
2. From the Program Menu, click
Trunk > ISDN > Call by Call. The
ISDN Call by Call Service screen
displays (shown right).
3. Enter Channel Group number.
4. Enter Program 323 data.
5. Enter Program 324 data.
6. Click Submit.
323 CBC Service
Prerequisite Program: 302 on page 6-25
To accomplish CBC services, each facility needs to be defined, its related Line Group assigned and
minimum and maximum values for the services provided. These service parameters may be set for three
different time zones, thus allowing fewer or more services of different types at different times of the day.
Complete the “Call-by-Call Record Sheet” on page D-30.
FIELD DESCRIPTION
Channel Group Enter the Channel Group Number.
Possible values: 1~32 (CTX100), 1~48 (CTX670 Basic),
1~128 (CTX670 Exp.), (default = no value)
01 Index Enter the CBC Service Index, or click one of the following buttons:
• List – view a summary list of programmed Trunks.
• Create – Assign a new Trunk with default settings.
Possible values: 0~32 (CTX100), 0~48 (CTX670 Basic),
0~128 (CTX670 Exp.), (default = no value)
02 Type of Service Select the CBC Service Type.
Note To delete CBC, set this field to 1: No Data.
Possible values: No data (default), POTS, FX, Tie Line (Enbloc), Tie Line (Cut
through), Intra LATA Out WATS, Banded Out WATTS, Inter LATA
Out WATS or INWATS
03 Facility Code Enter the supplied Facility code value from the PSTN. If no data is entered in this
field, any previously entered data is deleted.
Possible values: 00~31(default = no value)
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