Cisco Cisco Expressway Release Notes

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Features that rely on the SIP UPDATE method (

) will not work as expected because the Expressway

does not support this method. For example, CUCM and endpoints use UPDATE to implement blind transfer,
which does not work correctly via MRA.

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Peer-to-peer file transfer when using IM and Presence Service and Jabber is unsupported via MRA

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Managed File Transfer (MFT) with IM and Presence Service 10.5.2 (and later) and Jabber 10.6 (and later)
clients is supported via MRA

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File transfer with WebEx Messenger Service and Cisco Jabber is supported via MRA

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Deskphone control (QBE/CTI)

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Additional mobility features including DVO-R, GSM handoff and session persistency

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Hunt group/hunt pilot/hunt list

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Self-care portal

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Support for Jabber SDK

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Shared lines are supported in a limited way. Multiple endpoints can share a line but in-call features (like
hold/resume) only work on the first endpoint that answers. Endpoints sharing the line may not correctly
recognise the state of the call.

Unsupported Expressway Features and Limitations When Using Mobile and Remote
Access

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The Expressway cannot be used for Jabber Guest when it is used for MRA.

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The Expressway-C used for Mobile and Remote Access cannot also be used as a Lync 2013 gateway (if
required, this must be configured on a stand-alone Expressway-C.

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Secure XMPP traffic between Expressway-C and IM&P servers (XMPP traffic is secure between Expressway-
C and Expressway-E, and between Expressway-E and remote endpoint).

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Endpoint management capability (SNMP, SSH/HTTP access).

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Multi-domain and multi-customer support is limited as follows:

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Prior to X8.5, each Expressway deployment supported only one IM&P domain (even though IM and
Presence Service 10.0 or later supports Multiple Presence Domains).

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As of X8.5, you can create multiple deployments on the Expressway-C, but this feature is still limited to one
domain per deployment.

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As of X8.5.1, a deployment can have Multiple Presence Domains. This feature is in preview, and we
currently recommend that you do not exceed 50 domains.

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NTLM authentication via the HTTP proxy.

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Maintenance mode; if the Expressway-C or the Expressway-E is placed into maintenance mode, any existing
calls passing through that Expressway will be dropped.

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The Expressway-E must not have TURN services enabled.

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Deployments on Large VM servers are limited to 2500 proxied registrations to Unified CM (the same limit as
Small / Medium VM servers).

Supported Clients When Using Mobile and Remote Access

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Cisco Jabber for Windows 9.7 or later

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Cisco Jabber for iPhone and iPad 9.6.1 or later

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Cisco Jabber for Android 9.6 or later

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Cisco Jabber for Mac 9.6 or later

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Cisco TelePresence endpoints/codecs running TC7.0.1 or later firmware

Cisco Expressway Release Note