
CAPI and 
CAPI and RVS-COM 
The Cisco 700 series router supports the ISDN Device Control Protocol 
Using 
When the router receives a DCP message from a DCP client (connected to the LAN port of the router), the router processes the message and acts on it. The actions consist of sending confirmations to the DCP clients and sending ISDN packets through the router BRI port.
When the router receives a packet on its BRI port for one of the DCP clients, the router formats the packet as a DCP message and sends it to the corresponding client. The router supports all the DCP messages specified in the 
The router provides two 
The ISDN Core Engine of 
•CAPI layer B1
—64 kbps with HDLC framing
—
—T.30 modem for fax group 3
—Modem with full negotiation
•CAPI layer B2
—X.75 SLP (ISO 7776) with V.42bis compression option (negotiated)
—V.120 with V.42bis compression option (negotiated)
—Transparent
—T.30 modem for fax group 3
