Specifications

Table Of Contents

Integrator’s Reference Manual for Polycom HDX Systems

4–94 Polycom, Inc.

notification:callstatus:outgoing:45: Polycom Austin:

192.168.1.101:connected:384:0:videocall

Note: The call ID number (45) is an example of the response.

The Call ID number depends upon the call type.

Comments

When searching for feedback from the dial command, expect to see the set of

described strings as many times as there are channels in the call.

When initiating a multipoint call or adding multiple sites to a multipoint call

over ISDN, you must be sure that the total call rate does not exceed the

bandwidth of the ISDN interface. Otherwise, one of the calls may not connect.

For example, the total ISDN bandwidth for a T1 line is 1544 kbit/s. Thus,

making the following five calls in succession violates the ISDN bandwidth

rule, because the total ISDN bandwidth would require 1920 kbit/s (1920 =

384 * 5), and one of the calls may not connect:

• dial manual 384 5551212

dial manual 384 5561212

dial manual 384 5571212

dial manual 384 5581212

dial manual 384 5591212

Similarly, making the following two calls in a multipoint call where sites 1, 2,

and 3 are already connected at 256 kbits/s each violates the ISDN bandwidth

rule. This is because the total ISDN bandwidth required becomes 1792 kbits/s

(1792 = 256 * 3 + 512 * 2), and one of these two new calls may not connect:

• dial manual 512 5581212

dial manual 512 5591212

Note: The ISDN bandwidth rule is not applicable to IP calls and only applies

when multiple ISDN dial commands are issued in succession without waiting

for the active call notification (i.e., active: call[36] speed[128]) between dial

commands. Adding single calls to a multipoint call and then waiting for the

active call notification does not break the rule, because the system downspeeds

calls to meet the required ISDN bandwidth limitations.