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6Hardware additions
Add TN464GP/TN2464BP with echo cancellation
S8100 Installation and Upgrades 235
November 2003
2 Type [add | change] trunk-group [next | number] and press Enter.
3 On Trunk Features, screen 2, set the DS1 Echo Cancellation? field to y.
4 Type [add | change] ds1 UUCSS and press Enter.
5 On the DS1 Circuit Pack screen, set the Echo Cancellation? field to y.
When set to y, 2 new fields display: EC Direction: and EC Configuration:
• If you know the echo is coming into S8100/G600/CMC1, keep the default setting for the
EC Direction: field of inward.
• If you know that the distant party is hearing echo that originates in S8100/G600/CMC1 or
its line side stations or equipment, set the EC Direction: field to outward.
Keep the default setting for the EC Configuration: field of 1. This setting rapidly minimizes echo
when first detected, regardless of the volume of the talker’s voice.
6 Test the voice quality on a telephone connected through the TN464GP or TN2464BP circuit packs
and known to have echo to see if the echo was eliminated.
add trunk-group next Page 2 of 11 SPE A
TRUNK FEATURES
ACA Assignment? n Measured: both
Internal Alert? n Maintenance Tests? y
Data Restriction? n
Glare Handling: none
Used for DCS? n
Suppress # Outpulsing? n
Seize When Maintenance Busy: neither-end
Incoming Tone (DTMF) ANI: no Per Call CPN Blocking Code:
Connected to CO? n Per Call CPN Unblocking Code:
Ds1 Echo Cancellation? y
add ds1 2b08 Page 1 of 1 SPE B
DS1 CIRCUIT PACK
Location: 02B08 Name: Echo Cancel t23
Bit Rate: 2.048 Line Coding: hdb3
Signaling Mode: CAS
Interconnect: pbx Country Protocol: 1
Interface Companding: mulaw CRC? n
Idle Code: 11111111
Slip Detection? y Near-end CSU Type: other
Echo Cancellation? y
EC Direction: inward
EC Configuration: 1