Cisco Cisco Expressway Maintenance Manual
Setting
Description
Default
Zone
types
types
SIP UPDATE
strip mode
strip mode
Controls whether or not the Expressway strips the UPDATE method from
the Allow header of all requests and responses received from, and sent to,
this zone.
the Allow header of all requests and responses received from, and sent to,
this zone.
This option should normally be left as the default Off. However, some
systems do not support the UPDATE method in the Allow header, so for
these zones this should be set to On.
systems do not support the UPDATE method in the Allow header, so for
these zones this should be set to On.
Off
Neighbor
Interworking
SIP search
strategy
SIP search
strategy
Determines how the Expressway searches for SIP endpoints when
interworking an H.323 call.
interworking an H.323 call.
Options: the Expressway sends an OPTIONS request.
Info: the Expressway sends an INFO request.
This option should normally be left as the default Options. However, some
endpoints cannot respond to OPTIONS requests, so this must be set to
Info for such endpoints.
endpoints cannot respond to OPTIONS requests, so this must be set to
Info for such endpoints.
Options
Neighbor
SIP
UDP/BFCP
filter mode
UDP/BFCP
filter mode
Determines whether INVITE requests sent to this zone filter out
UDP/BFCP. This option may be required to enable interoperability with
SIP devices that do not support the UDP/BFCP protocol.
UDP/BFCP. This option may be required to enable interoperability with
SIP devices that do not support the UDP/BFCP protocol.
On: any media line referring to the UDP/BFCP protocol is replaced with
TCP/BFCP and disabled.
TCP/BFCP and disabled.
Off: INVITE requests are not modified.
Off
Neighbor
DNS
DNS
SIP UDP/IX
filter mode
filter mode
Determines whether INVITE requests sent to this zone filter out
UDP/UDT/IX or UDP/DTLS/UDT/IX. This option may be required to enable
interoperability with SIP devices that do not support the UDP/UDT/IX or
UDP/DTLS/UDT/IX protocol.
UDP/UDT/IX or UDP/DTLS/UDT/IX. This option may be required to enable
interoperability with SIP devices that do not support the UDP/UDT/IX or
UDP/DTLS/UDT/IX protocol.
On: any media line referring to the UDP/UDT/IX or UDP/DTLS/UDT/IX
protocol is replaced with RTP/AVP and disabled.
protocol is replaced with RTP/AVP and disabled.
Off: INVITE requests are not modified.
We recommend that SIP UDP/IX filter mode is set to On for:
n
business-to-business calls routed through neighbor zones that connect
to external networks / non-Cisco infrastructure
to external networks / non-Cisco infrastructure
n
calls that connect internally to Unified CM 8.x or earlier (use Off for 9.x
or later)
or later)
Off
Neighbor
DNS
DNS
SIP Duo
Video filter
mode
Video filter
mode
Determines whether INVITE requests sent to this zone filter out Duo
Video. This option may be required to enable interoperability with SIP
devices that do not support Duo Video.
Video. This option may be required to enable interoperability with SIP
devices that do not support Duo Video.
On: the second video line in any outgoing INVITE request is removed.
Off: INVITE requests are not modified.
Off
Neighbor
DNS
DNS
SIP record
route
address type
route
address type
Controls whether the Expressway uses its IP address or host name in the
record-route or path headers of outgoing SIP requests to this zone.
record-route or path headers of outgoing SIP requests to this zone.
IP: uses the Expressway's IP address.
Hostname: uses the Expressway's System host name (if it is blank the IP
address is used instead).
address is used instead).
IP
Neighbor
DNS
DNS
Cisco Expressway Administrator Guide (X8.5)
Page 130 of 394
Zones and neighbors
Configuring zones