![background image](http://html1.mh-extra.com/html/3com/vcx-v7122/vcx-v7122_user-manual_440856331.webp)
V7122 Gateway User Guide
331
Content-Disposition: signal; handling=required.
Call setup (originating gateway):
The QSIG SETUP request is encapsulated in a SIP INVITE message without being
altered. After the SIP INVITE request is sent, the gateway doesn’t encapsulate the
following QSIG message until a SIP 200 OK response is received. If the originating
gateway receives a 4xx, 5xx or 6xx response, it disconnects the QSIG call with a ‘no
route to destination’ cause.
Call setup (terminating gateway):
After the terminating gateway receives a SIP INVITE request with a Content-Type:
application/QSIG, it sends the encapsulated QSIG SETUP message to the Tel side and
sends a 200 OK response (no 1xx response is sent) to IP. The 200 OK response
includes an encapsulated QSIG CALL PROCEEDING message (without waiting for a
CALL PROCEEDING message from the Tel side). If tunneling is disabled and the
incoming INVITE includes a QSIG body, a 415 response is sent.
Mid-call communication:
After the SIP connection is established, all QSIG messages are encapsulated in SIP
INFO messages.
Call tear-down:
The SIP connection is terminated once the QSIG call is complete. The RELEASE
COMPLETE message is encapsulated in the SIP BYE message that terminates the
session.
To enable QSIG tunneling set the parameter EnableQSIGTunneling to 1 on both the
originating and terminating gateways, and the parameter ‘ISDNDuplicateQ931BuffMode’ to
128 (duplicate all messages) (both parameters are described in
ISDN and CAS Interworking-
Related Parameters
).
Summary of Contents for VCX V7122
Page 28: ...28 V7122 GatewayUser Guide ...
Page 39: ...V7122 Gateway User Guide 39 Reader s Notes ...
Page 40: ...40 V7122 GatewayUser Guide ...
Page 58: ...58 V7122 GatewayUser Guide Reader s Notes ...
Page 66: ...66 V7122 GatewayUser Guide Reader s Notes ...
Page 144: ...144 V7122 GatewayUser Guide Reader s Notes ...
Page 239: ...V7122 Gateway User Guide 239 Reader s Notes ...
Page 240: ...240 V7122 GatewayUser Guide ...
Page 246: ...246 V7122 GatewayUser Guide Reader s Notes ...
Page 270: ...270 V7122 GatewayUser Guide Reader s Notes ...
Page 287: ...V7122 Gateway User Guide 287 Reader s Notes ...
Page 288: ...288 V7122 GatewayUser Guide ...
Page 294: ...294 V7122 GatewayUser Guide Reader s Notes ...
Page 300: ...300 V7122 GatewayUser Guide Figure 88 Gateway s Startup Process ...
Page 315: ...V7122 Gateway User Guide 315 Reader s Notes ...
Page 316: ...316 V7122 GatewayUser Guide ...
Page 332: ...332 V7122 GatewayUser Guide Reader s Notes ...
Page 358: ...358 V7122 GatewayUser Guide Reader s Notes ...
Page 362: ...362 V7122 GatewayUser Guide Reader s Notes ...
Page 389: ...V7122 Gateway User Guide 389 Reader s Notes ...
Page 390: ...390 V7122 GatewayUser Guide ...
Page 398: ...398 V7122 GatewayUser Guide Reader s Notes ...
Page 406: ...406 V7122 GatewayUser Guide Reader s Notes ...
Page 408: ...408 V7122 GatewayUser Guide Reader s Notes ...
Page 409: ...V7122 Gateway User Guide 409 ...
Page 419: ...V7122 Gateway User Guide 419 Reader s Notes ...
Page 437: ...V7122 Gateway User Guide 437 Reader s Notes ...
Page 452: ...452 V7122 GatewayUser Guide Figure 137 UDP2File Utility ...
Page 453: ...V7122 Gateway User Guide 453 Reader s Notes ...
Page 459: ...V7122 Gateway User Guide 459 Reader s Notes ...
Page 475: ...V7122 Gateway User Guide 475 ...