I am not sure what you're asking about but the CWIS printing uses the same port as the web browser.
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The application can discover any type of printing device, Xerox or non-Xerox that is connected to a network supports the
SNMP v1 protocol, and has an SNMP agent running which exposes industry standard management data using:
•RFC 1213 (MIB-II for TCP/IP),
•RFC 1759 (Printer MIB v1),
•RFC 3805 (Printer MIB v2), and
•RFC 3806 (Printer Finishing MIB).
The application also queries RFC 1514 / 2790 (Host Resources MIB v1, v2) to obtain more attributes and status of the
printing device. Any printer directly attached to the network that supports SNMP and the standard printer MIB (RFC
3805) is supported. The SNMP Object Identifier (OID)
sysObjectID (220.127.116.11.18.104.22.168.0), and ifPhysAddress
(22.214.171.124.126.96.36.199.1.6.1 or 188.8.131.52.184.108.40.206.1.6.2) must be supported, or Internet Printing Protocol (IPP). To be fully compliant
the printer must support
Port allocation could vary depending upon OS port allocation. Default should be
Network printer discovery + Retrieval of capabilities > SNMP v1-v3 (port 161)
Printer discovery via Managed Server / Active Directory > RPC 135
Network printer discovery for non-SNMP > IPP 631