Cisco Unified IP Phones Expansion Module 7915 Specification
Physical Specifications
Dimensions (H x W x D)     8.0 x 4.84 x 2.0 in. (203 x 123 x 51 mm)
Weight     0.83 lb (376g)
Power     48 VDC, 58 mA maximum
Temperature Ratings
Operating temperature     32 to 104°F (0 to 40°C)
Relative humidity     10 to 95% (noncondensing)
Storage temperature     12 to 140°F (-10 to 60°C)
Software Requirements
Phone software requirements     8.3(5) and later
Call-control compatibility     Cisco Unified Communications Manager 4.2(3) SR3a, 4.3(2), 5.1(3)b, 6.1(1), 7.0 and 7.1 and later; Cisco Unified Communications Manager Express 4.3 and later
Signaling protocols     Skinny Client Control Protocol (SCCP) and Cisco IP Phone 7962G, 7965G, and 7975G Software 8.4(1) and later)
Hardware Requirements
Hardware Requirements    

    Cisco Unified IP Phone 7962G, 7965G, and 7975G models
    Cisco Unified IP Phone Expansion Module 7915 (CP-7915=)
        The maximum is two modules (connecting cable supplied with each Cisco Unified IP Phone Expansion Module 7915)
    Footstand is required; single (CP-SINGLFOOTSTAND=) or double (CP-DOUBLFOOTSTAND=) (required items for double Cisco Unified Expansion Module installation).
        Replacement of the standard Cisco Unified IP phone footstand is required. The standard footstand is replaced with a two-piece footstand specifically designed to support the Cisco Unified IP Phone Expansion Module 7915. Two footstands are available: a single footstand when one Cisco Unified IP Phone Expansion Module 7916 is used and a double footstand when two Cisco Unified IP Phone Expansion Module 7916 modules are used.
        The only tool required for installation of the Cisco Unified IP Phone Expansion Module 7915 is a flat-blade screwdriver or other appropriate tool to unlatch the pins securing the footstand to the Cisco Unified IP Phone 7962G, 7965G, and 7975G models.
    Power cube (CP-PWR-CUBE-3=) and cord (CP-PWR-CORD-xx=) to supply local power

Power Requirements
Number of Cisco Unified IP Phone Expansion Module 7915 Modules     Cisco Unified IP Phone 7962G, 7965G, and 7975G Models Power Source     Items to Order
1     In-line     1 Cisco Unified IP Phone Expansion Module 7915
1 single footstand
1 power cube
1 country cord
1     Local power (cube)*     1 Cisco Unified IP Phone Expansion Module 7915
1 single footstand
2     In-line or local**     2 Cisco Unified IP Phone Expansion Module 7915s
1 double footstand
1 power cube
1 country cord