ZyXEL Communications omni.net LCD+M Manuel D’Utilisation

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Technical Reference for ZyXEL omni.net series 
 
7-4
Compression Control AT Commands 
Description 
AT&K00 
Disable CCP negotiation (default). 
AT&K44 
Enable CCP negotiation. 
Table 37. Compression Control AT Commands
Multilink PPP 
There are two B channels in basic rate ISDN. This offers the possibility of opening multiple 
simultaneous channels between systems giving users additional bandwidth on demand. Multilink 
PPP is a method for bundling both B-channels into one PPP link for higher throughput. 
Multilink PPP must be negotiated in the establish-link phase by both peers. If the negotiation is 
successful, the second link will be dialed after the first link reaches network phase. In some 
countries the directory number is not the same for both channels. For dialing the second B-channel 
with a different directory number, both numbers must be obtained before dialing out unless the peer 
supports BACP/BAP, which will be described later in this chapter. Multilink PPP is described in 
RFC1990. 
CCP AT Commands 
Description 
AT&J3 
Enable Multilink PPP. 
ATDI<num1>[+<num2>] 
Dial Multilink PPP with num1 twice or with num1 and num2 if they differ. 
ATS61.3 = 0 
Use rotate method to bundle both channels (default). 
ATS61.3 = 1 
Use split method to bundle both channels. 
Table 38. CCP AT Commands
Call Bumping 
You can place or answer a voice call from a device that is attached to one of the POTS ports while 
Multilink PPP is active. The omni.net automatically drops one of the channels and assigns it to 
voice calls. Once a voice-call ends, the omni.net automatically re-establishes the channel. 
When fully disconnecting with the central switch, there is a 10-seconds time delay between 
on-hook phone and channel re-establishment. During call bumping, the traffic for BOD is still