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New Member

Cisco VoIP UDP Port Numbers

I am trying to classify Cisco VoIP for QoS and I cannot find the UDP port numbers. Can anybody point me in the right direction?

4 REPLIES
Cisco Employee

Re: Cisco VoIP UDP Port Numbers

For RTP traffic, they are UDP 16376-32767, TCP 1720 for H323.

New Member

Re: Cisco VoIP UDP Port Numbers

Thank you, do you have a URL to an official VoIP design document?

New Member

Re: Cisco VoIP UDP Port Numbers

DHCP UDP

67/68

HTTP TCP

80

RTP UDP

16384-32767

TAPI/JTAPI TCP

2748

Cisco Softphone Directry Lookup TCP

389/8404

Cisco Skinny TCP / Ethernet Phone Port

2000

Digital Port

2001

Analog Port

2002

MGCP Listen Port

2427

MGCP Keep-alive Port

2428

HIDS Management TCP

5000

New Member

Re: Cisco VoIP UDP Port Numbers

How does Callmanager assign the udp ports during call setup? We want to restrict CCM to a small number of ports for firewall securioty reasons. Is this possible? Please respond to curdyr@nationwide.com also. Thanks!

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