AudioCodes Mediant 1000, Installation Manual

Page: 45 / 62

Version 5.8 45 June 2009
Installation Manual 3. Configuring the Device
4. From the ‘Framing Method’ drop-down list, select the required framing method. For E1
trunks, always set this parameter to ‘Extended Super Frame’.
5. From the ‘Clock Master’ drop-down list, select the trunk's clock source:
•
‘Recovered’ = clock source is recovered from the trunk.
•
‘Generated’ = clock source is provided by the internal TDM bus clock source
(according to the parameter ‘TDM Bus Clock Source’).
6. From the ‘Line Code’ drop-down list, select the line code:
•
‘B8ZS’ (bipolar 8-zero substitution) for T1 trunks only.
•
‘HDB3’ (high-density bipolar 3) for E1 trunks only.
•
‘AMI’ (for both T1 and E1).
7. (Applicable only to ISDN protocols.) From the ‘ISDN Termination Side’ drop-down list,
select ‘User Side’ when the PSTN or PBX side is configured as ‘Network side’, and
vice versa. If the device's ISDN termination side is unknown, choose ‘User Side’ and
then access the 'Home' page. If the D-channel alarm is indicated, choose ‘Network
Side’.
8. To configure the different ISDN behavior bits, either enter the exact hexadecimal value
of the bits in the field to the right of the relevant behavior parameter, or directly
configure each bit field by completing the following steps:
a. Click the arrow button to the right of the relevant parameter; the relevant
behavior page appears.
b. Modify each bit field according to your requirements.
c. Click the Submit button to save your changes.
9. Click the Apply Trunk Settings button to apply your settings to the trunk.
10. Access the ‘TDM Bus Settings’ page ( Configuration tab > TDM Configuration menu
> TDM Bus Settings ), and then from the ‘PCM Law Select’ drop-down list, select
‘Alaw’ for E1 trunks and ‘MuLaw’ for T1 trunks.
11. Save the changes to flash memory and reset the device (refer to 'Saving and Resetting
the Device' on page
45 ).