Specifications

ManualsBrandsCisco ManualsComputer equipment7935 - IP Conference Station VoIP Phone

Overview of Cisco Unified SRST

Restrictions for Configuring Cisco Unified SRST

Cisco Unified Survivable Remote Site Telephony Version 4.0 System Administrator Guide

Table 4 History of Restrictions from Cisco SRST V1.0 to the Present Cisco Unified SRST Version

Cisco SRST

Version

Cisco IOS

Release Restrictions

Version 4.0 12.4(4)XC

• All of the restrictions in Cisco SRST Version 1.0.

• Call transfer is supported only on the following:

–

VoIP H.323, VoFR, and VoATM between Cisco gateways running Cisco IOS Release

12.2(11)T and using the H.323 nonstandard information element

–

FXO and FXS loop-start (analog)

–

FXO and FXS ground-start (analog)

–

Ear and mouth (E&M) (analog) and DID (analog)

–

T1 channel-associated signaling (CAS) with FXO and FXS ground-start signaling

–

T1 CAS with E&M signaling

–

All PRI and BRI switch types

• The following Cisco Unified IP Phone function keys are dimmed because they are not

supported during SRST operation:

–

MeetMe

–

GPickUp (group pickup)

–

Park

–

Confrn (conference)

• Although the Cisco IAD2420 series integrated access devices (IADs) support the Cisco

Unified SRST feature, this feature is not recommended as a solution for enterprise branch

offices.

Version 3.4 12.4(4)T

Version 3.3 12.3(14)T

Version 3.2 12.3(11)T

Version 3.1 12.3(7)T

Version 3.0 12.2(15)ZJ

Version 2.1 12.2(15)T

Version 2.02 12.2(13)T

Version 2.01 12.2(11)T

Version 2.0 12.2(8)T1

Version 2.0 12.2(8)T

Version 2.0 12.2(2)XT

Version 1.0 12.2(2)XB

• Does not support first generation Cisco Unified IP Phones, such as Cisco IP Phone 30 VIP

and Cisco IP Phone 12 SP+.

• Does not support other Cisco Unified CallManager applications or services: Cisco IP

SoftPhone, Cisco uOne—Voice and Unified Messaging Application, or Cisco IP Contact

Center.

• Does not support Centralized Automatic Message Accounting (CAMA) trunks on the

Cisco 3660 routers.

Note If you are in one of the states in the United States of America where there is a

regulatory requirement for CAMA trunks to interface to 911 emergency services, and

you would like to connect more than 48 Cisco Unified IP Phones to the Cisco 3660

multiservice routers in your network, contact your local Cisco account team for help

in understanding and meeting the CAMA regulatory requirements.

12.2(2)XG

12.1(5)YD