Ericsson HL950 Administrator's Manual page 51

4.2.7.5 E1 Structured CES with Adaptive Clocking and Axerra mode
The following explains how to set up E1 Structured CES Axerra mode using adaptive clocking with
10ms Jitter buffer.
E1 Structured CES with Adaptive Clocking and Axerra Mode
When reading the example scenario, consider the following points:
Since there is no multi-point support you can only have one session running.
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Structured CESoIP only works with Axerra compatibility mode.
!
In the figure above, PABX1 provides the clock source to the IP network.
!
PABX2 is clocked from the Branch Office HL950 extracted adaptive clock.
!
mask is a SDT and CAS channel bitmask of which channels with the bit of the far right is the
!
first Time Slot (TS0). In the example; Time Slots 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14.
TS0 (framing) and TS15 (signaling) are skipped along with the upper 16 time slots (as their
mask is all 0's).
NOTE!
In this mode the regenerated clock is subject to network Packet Delay Variation and may not
comply with jitter and wander specifications.
The HL950 Headquarters configuration (refer to Figure 21):
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LIF E1 Module Configuration:
HL950> set interface line x1:tmode=framed, cmode=master;
HL950> start interface line x1
CES Application Configuration:
HL950> add ces ip:name=test, ip=10.1.10.1, cesoip=axerra, type=sdt,
mask=0x00007ffe, clock=external;
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Page 51 (159)
Figure 21
Multi Service Edge Device HL950
Administrator's Guide
EN/LZT 108 5995 R3
June 2003