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DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506
Issue 1
April 2000
Screen reference
604DS1 Circuit Pack
17
This field only appears if the Bit Rate field is 1.544 (that is, if you’re using T-1
service). If you’re using E-1 service, DEFINITY ECS automatically selects
CEPT1 framing.
Tip:
Lucent recommends using ESF when your service provider supports it,
especially if you may someday upgrade the facility to ISDN. The ESF format
provides enhanced performance measurements and uses a sophisticated
error-checking method to ensure data integrity.
Signaling Mode
This field selects the signaling method used for the DS1 link. This mode must
match the method used on the other end of the link, so work with your network
services provider to determine the appropriate entry for this field.
Valid entries Usage
d4
Enter d4 to use the basic DS1 superframe (sf). This mode is
recommended only for voice traffic.
esf Enter esf to use the Extended Superframe format. This mode is
recommended for digital data traffic. If you enter
esf for a
TN464F, TN767E, or a later suffix DS1 circuit pack, a second
page of the DS1 Circuit Pack screen becomes available to
administer ESF Data Link options.
Valid entries Usage
CAS
(Channel
Associated
Signaling)
Enter
CAS for out-of band signaling with E-1 service. This
setting yields 30 64-kbps B-channels for voice or data
transmission. Channel 0 is used for framing while channel 16
carries signaling.
robbed-bit
Enter robbed-bit for in-band signaling with T-1 service. This
setting yields 24 56-kbps B-channels for voice transmission.
isdn-pri
Enter isdn-pri for either T-1 or E-1 ISDN service. This setting
supports both Facility Associated Signaling and Non-Facility
Associated Signaling.
isdn-ext
Enter isdn-ext for either T-1 or E-1 ISDN service. This setting
supports only Non-Facility Associated Signaling.
common-chan Enter common-chan, for out-of-band signaling with T-1
service. This setting yields 23 64-kbps B-channels for voice or
data transmission. Channel 24 is used for signaling.