The network topology diagram  shows a setup example for end-to-end interoperability with Cisco Unified CallManager Express Release 4.0(3) connected to the PBX via the Cisco 3745 T1 QSIG link. The Cisco 3745 IOS voice gateway is connected via H.323 to a Cisco 2811 IOS voice gateway. The two gateways are running Cisco Unified CallManager Express 4.0(3). Cisco Unified IP phones (models 7960, 7961G, and 7970) are connected to the 2 Cisco Unified CallManager Express gateways via SIP and SCCP, as per the figure. A NM-HDV and VWIC-1MFT-T1 are used for the T1 QSIG interface.

This example uses the Cisco 3745 voice gateway. However, the use of other Cisco voice gateways is also an option since Cisco Unified Call Manager Express QSIG implementation does not depend on the physical interface.

Features Supported

Basic Call, ENBLOC

Basic Call, Overlap (from PBX to Cisco Unified CallManager Express only)

CLIP-Calling Line (Number) Identification Presentation

CLIR-Calling Line (Number) Identification Restriction

CNIP-Calling Name Identification Presentation

CNIR-Calling Name Identification Restriction (from PBX to Cisco Unified CallManager Express only)

COLP-Connected Line (Number) Identification Presentation on Basic Calls

CONP-Connected Name Identification Presentation (for calls between PBX and Cisco Unified IP Phones running SCCP)

Alerting Name (for calls between PBX and Cisco Unified IP Phones running SCCP)

Tandem PSTN call

Consultation Transfer – Local

Consultation Transfer – Network/External

Early Attended Transfer – Local

Early Attended Transfer – Network/External

Blind Transfer – Local

Blind Transfer – Network/External

Call Forward Unconditional by Join – Local

Call Forward Unconditional by Join – Network/External

Call Forward Busy by Join – Local

Call Forward Busy by Join – Network/External

Call Forward No Reply by Join – Local

Call Forward No Reply by Join – Network/External

Call Forward Unconditional by Reroute – Network/External

Call Forward Busy by Reroute – Network/External

Call Forward No Reply by Reroute – Network/External

MWI