Cisco Jabber Desktop Media Ports

[VCsupport17]

Hi,

What are the ports used by Jabber client (desktop) for media?

Does the media flows directly between Jabber client or it goes through CUCM?

This document is not clear for me:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/10_6/planning-guide/CJAB_BK_CD3376A0_00_cisco-jabber-106-planning-guide/CJAB_BK_CD3376A0_00_cisco-jabber-planning-guide_chapter_011.html#CJAB_RF_N0DB4182_00

In this document it tells only the inbound/outbound ports for Jabber clients, how about for outbound/outbound ports for CUCM/IMP?

Is there any detailed documents how the Jabber communicates with CUCM/IMP for inbound and outbound ports?

Thanks,

Sy

[Manish Gogna]

Hi,

Media will flow through cucm if the call involves an MTP that is registered to cucm , else it flows directly between endpoints.

Manish

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[VCsupport17]

Thanks Manish for your response.

In the document, it says Cisco Jabber for Android, iPhone, and iPad uses port range 16384 to 32766 for RTP media. How about for Jabber for Desktop/Mac?

Thanks,

Sy

[Manish Gogna · Accepted solution]

Hi Sy,

As per the following

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/Windows/9_7/JABW_BK_C4C679C9_00_cisco-jabber-for-windows-97/JABW_BK_C4C679C9_00_cisco-jabber-for-windows-97_chapter_01.html#JABW_CN_HE163F0E_00

Define a Port Range on the SIP Profile

The client uses the port range to send RTP traffic across the network. The client divides the port range equally and uses the lower half for audio calls and the upper half for video calls. As a result of splitting the port range for audio media and video media, the client creates identifiable media streams. You can then classify and prioritize those media streams by setting DSCP values in the IP packet headers.

Procedure

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Step 1	Open the Cisco Unified CM Administration interface.
Step 2	Select Device > Device Settings > SIP Profile.
Step 3	Find the appropriate SIP profile or create a new SIP profile. The SIP Profile Configuration window opens.
Step 4	Specify the port range in the following fields: Start Media Port — Defines the start port for media streams. This field sets the lowest port in the range. Stop Media Port — Defines the stop port for media streams. This field sets the highest port in the range.
Step 5	Select Apply Config and then OK.

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Related Information

8.6.x: SIP Profile Configuration

9.0.x: SIP profile setup

How the Client Uses Port Ranges

Cisco Jabber equally divides the port range that you set in the SIP profile. The client then uses the port range as follows:

• Lower half of the port range for audio streams

• Upper half of the port range for video streams

For example, if you use a start media port of 3000 and an end media port of 4000, the client sends media through ports as follows:

• Ports 3000 to 3501 for audio streams

• Ports 3502 to 4000 for video streams

As a result of splitting the port range for audio media and video media, the client creates identifiable media streams. You can then classify and prioritize those media streams by setting DSCP values in the IP packet headers.

Also, the default port ranges are mentioned in the same doc

Media Streams — Because the client uses different port ranges for audio streams and video streams, you can differentiate audio media and video media based on those port range. Using the default port ranges in the SIP profile, you should mark media packets as follows:

• Audio media streams in ports from 16384 to 24574 as EF

• Video media streams in ports from 24575 to 32766 as AF41

Manish

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[VCsupport17]

Thanks Manish fo your help.

regards,

Sy